cel

So my TJ threw bank 1 and 2 lean code recently, so plugged the OBD reader in and checked the LTFT and O2 sensor data. LTFT at idle is about 20% at Running Temp in Closed Loop, on throttle open (in Neutral), the LTFT drops for a split second then goes back up to 20% and remains there till WOT...

Hello guys, My 05 TJ 4.0 6 speed had a check engine light few weeks ago i got P0153 code, replaced both upstream O2 sensors with NTK/NGK and after around 220 miles the CEL is back with P0133 and P0153! What should i look for now? TIA NTK 23018 NTK 23160

This code has thrown on me twice, and both time were under similar conditions. I've read a lot about this code, and owners seem to either "throw parts and money at it, plus a prayer or two" - and they may get lucky, or they may not - or they're of the "get rid of it and go with a manual" camp...

Ok, so I travel back and forth from Chicago area to So Cal. The Jeep (2005 LJ) is in Chicago land. Typically,I leave the Jeep in the garage and take an Uber to the bus shuttle to O’Hare. Last time! Snowing and no Uber available. Had to drive to station and leave Jeep in freezing parking lot...

So I was coming home from FT Lauderdale back to Winter Haven, and on SR-60 my Jeep started to do the shake and then CEL came on full flash, used my scan tool, Cyl 4 Misfire, hotswapped the plug at an auto zone and boom all good until it started happening again, took it to my mechanic he said the...

WOO! Had the Jeep 5 days and already a CEL. Luckily this page is awesome and I think I sorted it out through older threads but I want to get some outside input on my current situation. First the back ground! I got my car washed about 2 days ago and the genius car wash workers decided to wash...

Hey everyone, My first time posting onto this website. This is my first time owning a jeep tj (third owner), so I'm new to diagnosing the issues and fixing one up. My jeep is a 2006 Jeep Wrangler Rubicon that has 70k miles on it. When I got the jeep, the windshield wipers and wiper fluids...

Is there a way to get the check engine light to rest/turn off/disable after swapping an engine out? I am looking at a 99 TJ that had an engine from a 2000 Cherokee (Inline6) and the owner is telling me that is why the check engine light is on. Rig seems to run just fine. The problem is VA will...

Hey all a while back my check engine light would come on in my 1999 4.0l tj, and it read a random misfire and a misfire in cylinders 3 and 4. Took it to my dad's mechanic and they cleaned the injectors, spark plugs and distributor as well as crankshaft sensor had been replaced recently...

P0030 (M)1/1 O2 Sensor Heater Relay CircuitProblem detected in oxygen sensor heater relay circuit. P0036 (M)1/2 O2 Sensor Heater Relay CircuitProblem detected in oxygen sensor heater relay circuit. P0106Barometric Pressure Out of RangeMAP sensor input voltage out of an acceptable range detected...

If your TJ has a check engine light illuminated, below is the procedure for retrieving the diagnostic trouble code(s): Turn the ignition key until the digital odometer displays, then turn it back to off. Repeat three times in succession. (ON/OFF/ON/OFF/ON) Count the number of times the check...