Jeep Wrangler TJ OBDII Scan Code Guide

Chris

Administrator
Staff Member
Sep 28, 2015
35,326
Salem, Oregon
Having trouble with your Jeep Wrangler TJ or LJ? Scan it with an OBDII reader, pull the code, and use the table below to identify the potential issue.

Scan CodeProblemDescription

P0030

1/1 O2 Sensor Heater Relay Circuit

Problem detected in oxygen sensor heater relay circuit.

P0036

1/2 O2 Sensor Heater Relay Circuit

Problem detected in oxygen sensor heater relay circuit.

P0106

Barometric Pressure Out of Range

MAP sensor input voltage out of an acceptable range detected during reading of barometric pressure at key-on.

P0107

Map Sensor Voltage Too Low

MAP sensor input below minimum acceptable voltage.

P0108

Map Sensor Voltage Too High

MAP sensor input above maximum acceptable voltage.

P0112

Intake Air Temp Sensor Voltage Low

Intake air (charge) temperature sensor input below the minimum acceptable voltage.

P0113

Intake Air Temp Sensor Voltage High

Intake air (charge) temperature sensor input above the maximum acceptable voltage.

P0116

No Message

A rationality error has been detected in the coolant temp sensor.

P0117

ECT Sensor Voltage Too Low

Engine coolant temperature sensor input below the minimum acceptable voltage.

P0118

ECT Sensor Voltage Too High

Engine coolant temperature sensor input above the maximum acceptable voltage.

P0121

TPS Voltage Does Not Agree With MAP

TPS signal does not correlate to MAP sensor signal.

P0121

Accelerator Position Sensor (APPS) Signal Voltage Too Low

APPS voltage input below the minimum acceptable voltage.

P0122

Throttle Position Sensor Voltage Low

Throttle position sensor input below the acceptable voltage range.

P0122

Accelerator Position Sensor (APPS) Signal Voltage Too Low

APPS voltage input below the minimum acceptable voltage.

P0123

Throttle Position Sensor Voltage High

Throttle position sensor input above the maximum acceptable voltage.

P0123

Accelerator Position Sensor (APPS) Signal Voltage Too High

APPS voltage input above the maximum acceptable voltage.

P0125

Closed Loop Temp Not Reached

Time to enter Closed Loop Operation (Fuel Control) is excessive.

P0125

Engine is Cold Too Long

Engine does not reach operating temperature.

P0130

1/1 O2 Sensor Heater Circuit Malfunction

Oxygen sensor heater element malfunction.

P0131

1/1 O2 Sensor Shorted To Ground

Oxygen sensor input voltage maintained below normal operating range.

P0132

1/1 O2 Sensor Shorted To Voltage

Oxygen sensor input voltage maintained above normal operating range.

P0133

1/1 O2 Sensor Slow Response

Oxygen sensor response slower than minimum required switching frequency.

P0134

1/1 O2 Sensor Stays at Center

Neither rich or lean condition is detected from the oxygen sensor input.

P0135

1/1 O2 Sensor Heater Failure

Oxygen sensor heater element malfunction.

P0136

1/2 O2 Sensor Heater Circuit Malfunction

Oxygen sensor heater element malfunction.

P0137

1/2 O2 Sensor Shorted To Ground

Oxygen sensor input voltage maintained below normal operating range.

P0138

1/2 O2 Sensor Shorted To Voltage

Oxygen sensor input voltage maintained above normal operating range.

P0139

1/2 O2 Sensor Slow Response

Oxygen sensor response slower than minimum required switching frequency.

P0140

1/2 O2 Sensor Stays at Center

Neither rich or lean condition is detected from the oxygen sensor.

P0141

1/2 O2 Sensor Heater Failure

Oxygen sensor heater element malfunction.

P0143

1/2 O2 Sensor Shorted To Ground

Oxygen sensor input voltage maintained below normal operating range.

P0144

1/2 O2 Sensor Shorted To Voltage

Oxygen sensor input voltage maintained above normal operating range.

P0145

1/2 O2 Sensor Slow Response

Oxygen sensor response slower than minimum required switching frequency.

P0146

1/2 O2 Sensor Stays at Center

Neither rich or lean condition is detected from the oxygen sensor.

P0147

1/2 O2 Sensor Heater Failure

Oxygen sensor heater element malfunction.

P0151

2/1 O2 Sensor Shorted To Ground

Oxygen sensor input voltage maintained below normal operating range.

P0152

2/1 Sensor Shorted To Voltage

Oxygen sensor input voltage maintained above normal operating range.

P0153

2/1 Sensor Slow Response

Oxygen sensor response slower than minimum required switching frequency.

P0154

2/1 Sensor Stays at Center

Neither rich or lean condition is detected from the oxygen sensor.

P0155

2/1 O2 Sensor Heater Failure

Oxygen sensor heater element malfunction.

P0157

2/2 O2 Sensor Shorted To Ground

Oxygen sensor input voltage maintained below normal operating range.

P0158

2/2 O2 Sensor Shorted To Voltage

Oxygen sensor input voltage maintained above normal operating range.

P0159

2/2 Sensor Slow Response

Oxygen sensor response slower than minimum required switching frequency.

P0160

2/2 Sensor Stays at Center

Neither rich or lean condition is detected from the oxygen sensor.

P0161

2/2 O2 Sensor Heater Failure

Oxygen sensor heater element malfunction.

P0168

Decreased Engine Performance Due To High Injection Pump Fuel Temp

Fuel temperature is above the engine protection limit. Engine power will be derated.

P0171

1/1 Fuel System Lean

A lean air/fuel mixture has been indicated by an abnormally rich correction factor.

P0172

1/1 Fuel System Rich

A rich air/fuel mixture has been indicated by an abnormally lean correction factor.

P0174

2/1 Fuel System Lean

A lean air/fuel mixture has been indicated by an abnormally rich correction factor.

P0175

2/1 Fuel System Rich

A rich air/fuel mixture has been indicated by an abnormally lean correction factor.

P0176

Loss of Flex Fuel Calibration Signal

No calibration voltage present from flex fuel sensor.

P0177

Water In Fuel

Excess water found in fuel by water-in-fuel sensor.

P0178

Flex Fuel Sensor Volts Too Low

Flex fuel sensor input below minimum acceptable voltage.

P0178

Water In Fuel Sensor Voltage Too Low

Loss of water-in-fuel circuit or sensor.

P0179

Flex Fuel Sensor Volts Too High

Flex fuel sensor input above maximum acceptable voltage.

P0181

Fuel Injection Pump Failure

Low power, engine derated, or engine stops.

P0182

CNG Temp Sensor Voltage Too Low

Compressed natural gas temperature sensor voltage below acceptable voltage.

P0183

CNG Temp Sensor Voltage Too High

Compressed natural gas temperature sensor voltage above acceptable voltage.

P0201

Injector #1 Control Circuit

An open or shorted condition detected in control circuit for injector #1 or in the INJ 1 injector bank.

P0202

Injector #2 Control Circuit

An open or shorted condition detected in control circuit for injector #2 or in the INJ 2 injector bank.

P0203

Injector #3 Control Circuit

An open or shorted condition detected in control circuit for injector #3 or in the INJ 3 injector bank.

P0204

Injector #4 Control Circuit

Injector #4 or INJ 4 injector bank output driver stage does not respond properly to the control signal.

P0205

Injector #5 Control Circuit

Injector #5 output driver stage does not respond properly to the control signal.

P0206

Injector #6 Control Circuit

Injector #6 output driver stage does not respond properly to the control signal.

P0207

Injector #7 Control Circuit

Injector #7 output driver stage does not respond properly to the control signal.

P0208

Injector #8 Control Circuit

Injector #8 output driver stage does not respond properly to the control signal.

P0209

Injector #9 Control Circuit

Injector #9 output driver stage does not respond properly to the control signal.

P0210 

Injector #10 Control Circuit

Injector #10 output driver stage does not respond properly to the control signal.

P0215

Fuel Injection Pump Control Circuit

Failure in fuel pump relay control circuit

P0216

Fuel Injection Pump Timing Failure

High fuel supply restriction, low fuel pressure or possible wrong or incorrectly installed pump keyway.

P0217

Decreased Engine Performance Due To Engine Overheat Condition

Engine overheating. ECM will derate engine performance.

P0219

Crankshaft Position Sensor Overspeed Signal

Engine has exceeded rpm limits.

P0222

Idle Validation Signals Both Low

Problem detected with idle validation circuits within APPS.

P0223

Idle Validation Signals Both High (Above 5 Volts)

Problem detected with idle validation circuits within APPS.

P0230

Transfer Pump (Lift Pump) Circuit Out of Range

Problem detected in fuel transfer pump circuits.

P0232

Fuel Shutoff Signal Voltage Too High

Fuel shut-off signal voltage too high from ECM to fuel injection pump.

P0234

Turbo Boost Limit Exceeded

Problem detected in turbocharger wastegate.

P0236

Map Sensor Too High Too Long

Problem detected in turbocharger wastegate.

P0237

Map Sensor Voltage Too Low

MAP sensor voltage input below the minimum acceptable voltage.

P0238

Map Sensor Voltage Too High

MAP sensor voltage input above the maximum acceptable voltage.

P0251[br /]

Fuel Inj. Pump Mech. Failure Fuel Valve Feedback Circuit

Problem sensed with fuel circuit internal to fuel injection pump.

P0253

Fuel Injection Pump Fuel Valve Open Circuit

Problem sensed with fuel circuit internal to fuel injection pump.

P0254

Fuel Injection Pump Fuel Valve Current Too High

Problem caused by internal fuel injection pump failure.

P0300

Multiple Cylinder Mis-fire

Misfire detected in multiple cylinders.

P0301

CYLINDER #1 MISFIRE

Misfire detected in cylinder #1.

P0302

CYLINDER #2 MISFIRE

Misfire detected in cylinder #2.

P0303

CYLINDER #3 MISFIRE

Misfire detected in cylinder #3.

P0304

CYLINDER #4 MISFIRE

Misfire detected in cylinder #4.

P0305

CYLINDER #5 MISFIRE

Misfire detected in cylinder #5.

P0306

CYLINDER #6 MISFIRE

Misfire detected in cylinder #6.

P0307

CYLINDER #7 MISFIRE

Misfire detected in cylinder #7.

P0308

CYLINDER #8 MISFIRE

Misfire detected in cylinder #8.

P0309

CYLINDER #9 MISFIRE

Misfire detected in cylinder #9.

P0310

CYLINDER #10 MISFIRE

Misfire detected in cylinder #10.

P0320

No Crank Reference Signal at PCM

No reference signal (crankshaft position sensor) detected during engine cranking.

P0320

No RPM Signal to PCM (Crankshaft Position Sensor Signal to JTEC)

A CKP signal has not been detected at the PCM.

P0325

Knock Sensor #1 Circuit

Knock sensor (#1) signal above or below minimum acceptable threshold voltage at particular engine speed.

P0330

Knock Sensor #2 Circuit

Knock sensor (#2) signal above or below minimum acceptable threshold voltage at particular engine speed.

P0336

Crankshaft Position (CKP) Sensor Signal

Problem with voltage signal from CKP.

P0340

No Cam Signal At PCM

No fuel sync.

P0341

Camshaft Position (CMP) Sensor Signal

Problem with voltage signal from CMP.

P0350

Ignition Coil Draws Too Much Current

A coil (1-5) is drawing too much current.

P0351

Ignition Coil # 1 Primary Circuit

Peak primary circuit current not achieved with maximum dwell time.

P0352

Ignition Coil # 2 Primary Circuit

Peak primary circuit current not achieved with maximum dwell time.

P0353

Ignition Coil # 3 Primary Circuit

Peak primary circuit current not achieved with maximum dwell time.

P0354

Ignition Coil # 4 Primary Circuit

Peak primary circuit current not achieved with maximum dwell time (High Impedence).

P0355

Ignition Coil # 5 Primary Circuit

Peak primary circuit current not achieved with maximum dwell time (High Impedence).

P0356

Ignition Coil # 6 Primary Circuit

Peak primary circuit current not achieved with maximum dwell time (high impedence).

P0357

Ignition Coil # 7 Primary Circuit

Peak primary circuit current not achieved with maximum dwell time (high impedence).

P0358

Ignition Coil # 8 Primary Circuit

Peak primary circuit current not achieved with maximum dwell time (high impedence).

P0370

Fuel Injection Pump Speed/Position Sensor Sig Lost

Problem caused by internal fuel injection pump failure.

P0380

Intake Air Heater Relay #1 Control Circuit

Problem detected in #1 air heater solenoid/relay circuit (not heater element)

P0381

Wait To Start Lamp Inoperative

Problem detected in wait-to-start bulb circuit.

P0382

Intake Air Heater Relay #2 Control Circuit

Problem detected in #2 air heater solenoid/relay circuit (not heater element)

P0387

Crankshaft Position Sensor Supply Voltage Too Low

CKP sensor voltage input below the minimum acceptable voltage.

P0388

Crankshaft Position Sensor Supply Voltage Too High

CKP sensor voltage input above the maximum acceptable voltage.

P0401

EGR System Failure

Required change in air/fuel ration not detected during diagnostic test.

P0403

EGR Solenoid Circuit

An open or shorted condition detected in the EGR solenoid control circuit.

P0404

EGR Position Sensor Rationality

EGR position sensor signal does not correlate to EGR duty cycle.

P0405

EGR Position Sensor Volts Too Low

EGR position sensor input below the acceptable voltage range.

P0406

EGR Position Sensor Volts Too High

EGR position sensor input above the acceptable voltage range.

P0412

Secondary Air Solenoid Circuit

An open or shorted condition detected in the secondary air (air switching/aspirator) solenoid control circuit.

P0420

1/1 Catalytic Converter Efficiency

Catalyst 1/1 efficiency below required level.

P0432

1/2 Catalytic Converter Efficiency

Catalyst 2/1 efficiency below required level.

P0441

Evap Purge Flow Monitor

Insufficient or excessive vapor flow detected during evaporative emission system operation.

P0442

Evap Leak Monitor Medium Leak Detected

A small leak has been detected in the evaporative system.

P0443

Evap Purge Solenoid Circuit

An open or shorted condition detected in the EVAP purge solenoid control circuit.

P0455

Evap Leak Monitor Large Leak Detected

A large leak has been detected in the evaporative system.

P0456

Evap Leak Monitor Small Leak Detected

Leak has been detected in the evaporative system.

P0460

Fuel Level Unit No Change Over Miles

During low fuel.

P0460

Fuel Level Unit No Change Over Miles

Fuel level sending unit voltage does not change for more than 40 miles.

P0462

Fuel Level Sending Unit Volts Too Low

Fuel level sensor input below acceptable voltage.

P0462

Fuel Level Sending Unit Volts Too Low

Open circuit between PCM and fuel gauge sending unit.

P0463

Fuel Level Sending Unit Volts Too High

Fuel level sensor input above acceptable voltage.

P0463

Fuel Level Sending Unit Volts Too High

Circuit shorted to voltage between PCM and fuel gauge sending unit.

P0500

No Vehicle Speed Sensor Signal

No vehicle speed sensor signal detected during road load conditions.

P0500

No Vehicle Speed Sensor Signal

A vehicle speed signal was not detected.

P0505

Idle Air Control Motor Circuits

SBEC II

P0522

Oil Pressure Voltage Too Low

Oil pressure sending unit (sensor) voltage input below the minimum acceptable voltage.

P0523

Oil Pressure Voltage Too High

Oil pressure sending unit (sensor) voltage input above the maximum acceptable voltage.

P0524

Oil Pressure Too Low

Engine oil pressure is low. Engine power derated.

P0545

A/C Clutch Relay Circuit

Problem detected in air conditioning clutch relay control circuit.

P0551

Power Steering Switch Failure

Incorrect input state detected for the power steering switch circuit. PL: High pressure seen at high speed.

P0562

Charging System Voltage Too Low

Supply voltage sensed at ECM too low.

P0563

Charging System Voltage Too High

Supply voltage sensed at ECM too high.

P0600

PCM Failure SPI Communications

No communication detected between co-processors in the control module.

P0601

Internal Controller Failure

Internal control module fault condition (check sum) detected.

P0602

ECM Fueling Calibration Error

ECM Internal fault condition detected.

P0604

RAM Check Failure

Transmission control module RAM self test fault detected. -Aisin transmission

P0605

ROM Check Failure

Transmission control module ROM self test fault detected. -Aisin transmission

P0606

ECM Failure

ECM Internal fault condition detected.

P0615

Starter Relay Control Circuit

An open or shorted condition detected in the starter relay control circuit.

P0622

Generator Field Not Switching Properly

An open or shorted condition detected in the generator field control circuit.

P0645

A/C Clutch Relay Circuit

An open or shorted condition detected in the A/C clutch relay control circuit.

P0700

EATX Controller DTC Present

This SBEC III or JTEC DTC indicates that the EATX or Asin controller has an active fault and has illuminated the MIL via a CCD (EATX) or SCI (Aisin) message. The specific fault must be acquired from the EATX via CCD or from the Aisin via ISO-9141.

P0703

Brake Switch Stuck Pressed or Released

Incorrect input state detected in the brake switch circuit. (Changed from P1595)

P0711

Trans Temp Sensor, No Temp Rise After Start

Relationship between the transmission temperature and overdrive operation and/or TCC operation indicates a failure of the Transmission Temperature Sensor. OBD II Rationality. Was MIL code 37.

P0712

Trans Temp Sensor Voltage Too Low

Transmission fluid temperature sensor input below acceptable voltage. Was MIL code 37.

P0712

Trans Temp Sensor Voltage Too Low

Voltage less than 1.55 Volts (4-speed auto. trans. only)

P0713

Trans Temp Sensor Voltage Too High

Transmission fluid temperature sensor input above acceptable voltage. Was MIL code 37.

P0713

Trans Temp Sensor Voltage Too High

Voltage greater than 3.76 volts (4-speed auto. trans. only).

P0720

Low Output SPD Sensor RPM, Above 15 mph

The relationship between the Output Shaft Speed Sensor and vehicle speed is not within acceptable limits.

P0720

Low Output Spd Sensor RPM Above 15 mph

Output shaft speed is less than 60 rpm with vehicle speed above 15 mph (4-speed auto. trans. only).

P0740

Torq Con Clu, No RPM Drop at Lockup

Relationship between engine and vehicle speeds indicated failure of torque convertor clutch lock-up system (TCC/PTU solenoid)

P0743

Torque Converter Clutch Solenoid/ Trans Relay Circuits

An open or shorted condition detected in the torque convertor clutch (part throttle unlock) solenoid control circuit. Shift solenoid C electrical fault - Asin transmission

P0743

Torque Converter Clutch Solenoid/ Trans Relay Circuits

An open or shorted condition detected in the torque convertor part throttle unlock solenoid control circuit (3 or 4-speed auto. trans. only).

P0748

Governor Pressure Sol Control/Trans Relay Circuits

An open or shorted condition detected in the Governor Pressure Solenoid circuit or Trans Relay Circuit in JTEC RE transmissions.

P0748

Governor Pressure Sol Control/Trans Relay Circuits

An open or shorted condition detected in the governor pressure solenoid or relay circuits (4-speed auto. trans. only).

P0751

O/D Switch Pressed (Lo) More Than 5 Minutes

Overdrive override switch input is in a prolonged depressed state.

P0751

O/D Switch Pressed (LO) More Than 5 Minutes

Overdrive Off switch input too low for more than 5 minutes (4-speed auto. trans. only).

P0753

Trans 3-4 Shift Sol/Trans Relay Circuits

An open or shorted condition detected in the overdrive solenoid control circuit or Trans Relay Circuit in JTEC RE transmissions. Was MIL code 45.

P0753

Trans 3-4 Shift Sol/Trans Relay Circuits

An open or shorted condition detected in the transmission 2-4 shift solenoid circuit (4-speed auto. trans. only).

P0756

AW4 Shift Sol B (2-3) Functional Failure

Shift solenoid B (2-3) functional fault - Asin transmission

P0783

3-4 Shift Sol, No RPM Drop at Lockup

The overdrive solenoid is unable to engage the gear change from 3rd gear to the overdrive gear.

P0801

Reverse Gear Lockout circuit Open or Short

An open or shorted condition detected in the transmission reverse gear lock-out solenoid control circuit.

P0830

Clutch Depressed Switch Circuit

Problem detected in the clutch switch circuit.

P0833

Clutch Released Switch Circuit

Problem detected in the clutch switch circuit.

P1110

Decrease Engine Performance Due To High Intake Air Temperature

Intake manifold air temperature is above the engine protection limit. Engine power will be derated.

P1180

Decreased Engine Performance Due To High Injection Pump Fuel Temp

Fuel temperature is above the engine protection limit. Engine power will be derated.

P1195

1/1 O2 Sensor Slow During Catalyst Monitor

A slow switching oxygen sensor has been detected in bank 1/1 during catalyst monitor test. (Also see SCI DTC $66) (was P0133)

P1196 [br /]

2/1 O2 Sensor Slow During Catalyst Monitor

A slow switching oxygen sensor has been detected in bank 2/1 during catalyst monitor test. (Also see SCI DTC $7A) (was P0153)

P1197

1/2 O2 Sensor Slow During Catalyst Monitor

A slow switching oxygen sensor has been detected in bank 1/2 during catalyst monitor test. (Also see SCI DTC $68) (was P0139)

P1198

Radiator Temperature Sensor Volts Too High

Radiator coolant temperature sensor input above the maximum acceptable voltage.

P1199

Radiator Temperature Sensor Volts Too Low

Radiator coolant temperature sensor input below the minimum acceptable voltage.

P1281

Engine is Cold Too Long

Engine coolant temperature remains below normal operating temperatures during vehicle travel (Thermostat).

P1282

Fuel Pump Relay Control Circuit

An open or shorted condition detected in the fuel pump relay control circuit.

P1283

Idle Select Signal Invalid

ECM or fuel injection pump module internal fault condition detected.

P1284

Fuel Injection Pump Battery Voltage Out-Of-Range

Fuel injection pump module internal fault condition detected. Engine power will be derated.

P1285

Fuel Injection Pump Controller Always On

Fuel injection pump module relay circuit failure detected. Engine power will be derated.

P1286

Accelerator Position Sensor (APPS) Supply Voltage High

High voltage detected at APPS.

P1287

Fuel Injection Pump Controller Supply Voltage Low

ECM or fuel injection pump module internal fault condition detected. Engine power will be derated.

P1288

Intake Manifold Short Runner Solenoid Circuit

An open or shorted condition detected in the short runner tuning valve circuit.

P1289

Manifold Tune Valve Solenoid Circuit

An open or shorted condition detected in the manifold tuning valve solenoid control circuit.

P1290

CNG Fuel System Pressure Too High

Compressed natural gas system pressure above normal operating range.

P1291

No Temp Rise Seen From Intake Heaters

Energizing Heated Air Intake does not change intake air temperature sensor an acceptable amount.

P1291

No Temperature Rise Seen From Intake Air Heaters

Problem detected in intake manifold air heating system.

P1292

CNG Pressure Sensor Voltage Too High

Compressed natural gas pressure sensor reading above acceptable voltage.

P1293

CNG Pressure Sensor Voltage Too Low

Compressed natural gas pressure sensor reading below acceptable voltage.

P1294

Target Idle Not Reached

Target RPM not achieved during drive idle condition. Possible vacuum leak or IAC (AIS) lost steps.

P1295

No 5 Volts to TP Sensor

Loss of a 5 volt feed to the Throttle Position Sensor has been detected.

P1295

Accelerator Position Sensor (APPS) Supply Voltage Too Low

APPS supply voltage input below the minimum acceptable voltage.

P1296

No 5 Volts to MAP Sensor

Loss of a 5 volt feed to the MAP Sensor has been detected.

P1297

No Change in MAP From Start To Run

No difference is recognized between the MAP reading at engine idle and the stored barometric pressure reading.

P1298

Lean Operation at Wide Open Throttle

A prolonged lean condition is detected during Wide Open Throttle.

P1299

Vacuum Leak Found (IAC Fully Seated)

MAP Sensor signal does not correlate to Throttle Position Sensor signal. Possible Vacuum Leak.

P1388

Auto Shutdown Relay Control Circuit

An open or shorted condition detected in the ASD or CNG shutoff relay control ckt.

P1388

Auto Shutdown Relay Control Circuit

An open or shorted condition detected in the auto shutdown (ASD) relay circuit.

P1389

No ASD Relay Output Voltage At PCM

No Z1 or Z2 voltage sensed when the auto shutdown relay is energized.

P1389

No ASD Relay Output Voltage At PCM

An open condition detected in the ASD relay output circuit.

P1390

Timing Belt Skipped 1 Tooth or More

Relationship between Cam and Crank signals not correct.

P1391

Intermittent Loss of CMP or CKP

Loss of the Cam Position Sensor or Crank Position sensor has occurred. For PL 2.0L

P1398

Mis-Fire Adaptive Numerator at Limit

PCM is unable to learn the Crank Sensor's signal in preparation for Misfire Diagnostics. Probable defective Crank Sensor.

P1399

Wait To Start Lamp Circuit

An opn or shorted condition detected in the Wait to Start Lamp circuit.

P1403

No 5V to EGR Sensor

Loss of 5V feed to the EGR position sensor

P1475

Aux 5 Volt Supply Voltage High

Sensor supply voltage for ECM sensors is too high. (See also P01475)

P1475

Aux 5 Volt Supply Voltage High

Sensor supply voltage for ECM sensors is too high. (See also P1475)

P1476

Too Little Secondary Air

Insufficient flow of secondary air injection detected during aspirator test (was P0411)

P1477

Too Much Secondary Air

Excessive flow of secondary air injection detected during aspirator test (was P0411)

P1478

Battery Temp Sensor Volts Out of Limit

Internal temperature sensor input voltage out of an acceptable range.

P1479

Transmission Fan Relay Circuit

An open or shorted condition detected in the transmission fan relay circuit.

P1480

PCV Solenoid Circuit

An open or shorted condition detected in the PCV solenoid circuit.

P1481

EATX RPM Pulse Perf

EATX RPM pulse generator signal for misfire detection does not correlate with expected value.

P1482

Catalyst Temperature Sensor Circuit Shorted Low

Catalyst temperature sensor circuit shorted low.

P1483

Catalyst Temperature Sensor Circuit Shorted High

Catalyst temperature sensor circuit shorted high.

P1484

Catalytic Converter Overheat Detected

A catalyst overheat condition has been detected by the catalyst temperature sensor.

P1485

Air Injection Solenoid Circuit

An open or shorted condition detected in the air assist solenoid circuit.

P1486

Evap Leak Monitor Pinched Hose Found

LDP has detected a pinched hose in the evaporative hose system.

P1487

Hi Speed Rad Fan CtrL Relay Circuit

An open or shorted condition detected in the control circuit of the #2 high speed radiator fan control relay.

P1488

Auxiliary 5 Volt Supply Output Too Low

Auxiliary 5 volt sensor feed is sensed to be below an acceptable limit.

P1489

High Speed Fan CtrL Relay Circuit

An open or shorted condition detected in the control circuit of the high speed radiator fan control relay.

P1490

Low Speed Fan CtrL Relay Circuit

An open or shorted condition detected in the control circuit of the low speed radiator fan control relay.

P1491

Rad Fan Control Relay Circuit

An open or shorted condition detected in the radiator fan control relay control circuit. This includes PWM solid state relays.

P1492

Ambient/Batt Temp Sensor Volts Too High

External temperature sensor input above acceptable voltage.

P1492

Ambient/Batt Temp Sensor Volts Too High

Battery temperature sensor input voltage above an acceptable range.

P1493

Ambient/Batt Temp Sensor Volts Too Low

External temperature sensor input below acceptable voltage.

P1493

Ambient/Batt Temp Sensor Volts Too Low

Battery temperature sensor input voltage below an acceptable range.

P1494

Leak Detection Pump Sw or Mechanical Fault

Incorrect input state detected for the Leak Detection Pump (LDP) pressure switch.

P1495

Leak Detection Pump Solenoid Circuit

An open or shorted condition detected in the Leak Detection Pump (LDP) solenoid circuit.

P1496

5 Volt Supply, Output Too Low

5 volt sensor feed is sensed to be below an acceptable limit. (less thean 4V for 4 seconds)

P1498

High Speed Rad Fan Ground CtrL Relay Circuit

An open or shorted condition detected in the control circuit of the #3 high speed radiator fan control relay.

P1499

Hydraulic cooling fan solenoid circuit

An open or shorted condition detected in the cooling fan control solenoid circuit.

P1594

Charging System Voltage Too High

Battery voltage sense input above target charging voltage during engine operation.

P1594

Charging System Voltage Too High

Battery voltage sense input above target charging voltage during engine operation.

P1595

Speed Control Solenoid Circuits

An open or shorted condition detected in either of the speed control vacuum or vent solenoid control circuits.

P1595

Speed Control Solenoid Circuits

An open or shorted condition detected in the speed control vacuum or vent solenoid control circuits.

P1596

Speed Control Switch Always High

Speed control switch input above maximum acceptable voltage.

P1597

Speed Control Switch Always Low

Speed control switch input below minimum acceptable voltage.

P1597

Speed Control Switch Always Low

Speed control switch input below minimum acceptable voltage.

P1598

A/C Pressure Sensor Volts Too High

A/C pressure sensor input above maximum acceptable voltage.

P1598

A/C Sensor Input High

Problem detected in air conditioning electrical circuit.

P1599

A/C Pressure Sensor Volts Too Low

A/C pressure sensor input below minimum acceptable voltage.

P1599

A/C Sensor Input Low

Problem detected in air conditioning electrical circuit.

P1680

Clutch Released Switch Circuit

Problem detected in clutch switch electrical circuit.

P1681

No I/P Cluster CCD/J1850 Messages Received

No CCD/J1850 messages received from the cluster control module.

P1682

Charging System Voltage Too Low

Battery voltage sense input below target charging voltage during engine operation and no significant change in voltage detected during active test of generator output circuit.

P1682

Charging System Voltage Too Low

Charging system output voltage low.

P1683

SPD CtrL PWR Relay; or S/C 12V Driver Circuit

An open or shorted condition detected in the speed control servo power control circuit.

P1683

SPD CtrL PWR Relay; or S/C 12V Driver Circuit

An open or shorted condition detected in the speed control servo power control circuit.

P1684

Batt Loss in 50 Starts

The battery has been disconnected within the last 50 starts.

P1685

SKIM Invalid Key

The engine controller has received an invalid key from the SKIM.

P1686

No SKIM BUS Messages Received

No CCD/J1850 messages received from the Smart Key Immobilizer Module (SKIM)

P1687

No MIC BUS Message

No CCD/J1850 messages received from the Mechanical Instrument Cluster (MIC) module.

P1688

Internal Fuel Injection Pump Controller Failure

Internal problem within the fuel injection pump. Low power, engine derated, or engine stops.

P1689

No Communication Between ECM and Injection Pump Module

Data link circuit failure between ECM and fuel injection pump. Low power, engine derated, or engine stops.

P1690

Fuel Injection Pump CKP Sensor Does Not Agree With ECM CKP Sensor

Problem in fuel sync signal. Possible injection pump timing problem. Low power, engine derated, or engine stops.

P1691

Fuel Injection Pump Controller Calibration Error

Internal fuel injection pump failure. Low power, engine derated, or engine stops.

P1692

DTC Set In ECM

A "Companion DTC" was set in both the ECM and PCM.

P1693

DTC Detected In Companion Module

A fault has been generated in the companion engine control module.

P1693

DTC Detected In PCM/ECM or DTC Detected in ECM

A "Companion DTC" was set in both the ECM and PCM.

P1694

Fault In Companion Module

No CCD/J1850 messages received from the powertrain control module-Aisin transmission.

P1694

No CCD Messages Received From ECM

Bus communication failure to PCM.

P1695

No CCD/J1850 Message From Body Control Module

No CCD/J1850 messages received from the body control module.

P1696

PCM Failure EEPROM Write Denied

Unsuccessful attempt to write to an EEPROM location by the control module.

P1697

PCM Failure SRI Mile Not Stored

Unsuccessful attempt to update Service Reminder Indicator (SRI or EMR) mileage in the control module EEPROM.

P1698

No CCD/J1850 Message From TCM

No CCD/J1850 messages received from the electronic transmission control module (EATX) or the Aisin transmission controller.

P1698

No CCD Messages Received From PCM

Bus communication failure to PCM. A "Companion DTC" was set in both the ECM and PCM.

P1719

Skip Shift Solenoid Circuit

AN open or shorted condition detected in the transmission 2-3 gear lock-out solenoid control circuit.

P1740

TCC or OD Sol Perf

A rationality error has been detected in either the TCC solenoid or overdrive solenoid systems.

P1740

TCC OR O/D Solenoid Performance

Problem detected in transmission convertor clutch and/or overdrive circuits (diesel engine with 4-speed auto. trans. only).

P1756

GOV Press Not Equal to Target @ 15-20 PSI

The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for 1st, 2nd, and 3rd gear. (Mid Pressure Malfunction)

P1756

GOV Press Not Equal to Target @ 15-20 PSI

Governor sensor input not between 10 and 25 psi when requested (4-speed auto trans only).

P1757

GOV Press Not Equal to Target @ 15-20 PSI

The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for 1st, 2nd, and 3rd gear. (Zero Pressure Malfunction)

P1757

Governor Pressure Above 3 PSI in Gear With 0 MPH

Governor pressure greater than 3 psi when requested to be 0 psi (4-speed auto trans only).

P1762

Gov Press Sen Offset Volts Too Lo or High

The Governor Pressure Sensor input is greater than a calibration limit or is less than a calibration limit for 3 consecutive park/neutral calibrations.

P1762

Governor Press Sen Offset Volts Too Low or High

Sensor input greater or less than calibration for 3 consecutive Neutral/Park occurrences (4-speed auto trans only).

P1763

Governor Pressure Sensor Volts Too Hi

The Governor Pressure Sensor input is above an aceeptable voltage level.

P1763

Governor Pressure Sensor Volts Too Hi

Voltage greater than 4.89 volts (4-speed auto trans only).

P1764

Governor Pressure Sensor Volts Too Low

The Governor Pressure Sensor input is below an acceptable voltage level.

P1764

Governor Pressure Sensor Volts Too Low

Voltage less than .10 volts (4-speed auto trans only).

P1765

Trans 12 Volt Supply Relay CtrL Circuit

An open or shorted condition is detected in the Transmission Relay control circuit. This relay supplies power to the TCC.

P1765

Trans 12 Volt Supply Relay CtrL Circuit

Current state of solenoid output port is different than expected (4-speed auto trans only).

P1899

P/N Switch Stuck in Park or in Gear

Incorrect input state detected for the Park/Neutral switch.

P1899

P/N Switch Stuck in Park or in Gear

Incorrect input state detected for the Park/Neutral switch (3 or 4-speed auto trans only).