Check Gauges light but everything seems normal?

[Cricket]

04 2.4 manual, 180,000ish

Hey everyone,

Jeep starts up every time I turn the key, though slow to start on occasion, still the first turn of the ignition. Never seen the Check Gauges light in my 4 months of ownership. It was even parked for nearly a month at one point.

Jeep sat all day while I was at work. When I left, the check gauges light came on. I had probably been driving at low speeds for less than 5 minutes.

I did notice the battery voltage changing some during driving, but I’ve never paid attention to if that was normal before other than checking gauges to make sure they were in normal range.

I never saw the voltage lower than 14 or higher than the dot above the 14. Seemed to fluctuate some depending on speeding up or driving up hill.

Cleaned my battery posts and cables a couple weeks ago.

Any ideas? Thanks!

 

[AjRagno]

The check gauges light will set a code. Cycle the ignition from off to on three times and it will be displayed in the odometer readout.

Don’t trust a scanner to pick up the code in this case. Use the key trick.

 

[Cricket]

The check gauges light will set a code. Cycle the ignition from off to on three times and it will be displayed in the odometer readout.

Don’t trust a scanner to pick up the code in this case. Use the key trick.

Thanks so much. I’ll give it a shot.

 

[SBarber1]

Pressure sensor going bad maybe? I had that happen before, just caught it when the gauge needle was bouncing. Didnt notice it yhe first couple times because reading went back to normal. Figured it out as problem got worse. No other symptoms than the needle occasionaly bouncing causing check gauges light to come on.

 

[dbbd1]

Was it doing this before you cleaned the battery connections?
If not, that's where I'd start.

 

[CharlesHS]

IF you have a VOM you need to verify voltages at the battery and on the alternator charging stud and at the PCM power to figure out what is going on...