Check Engine Light On problems of the 2015 Jeep Wrangler

Five problems related to check engine light on have been reported for the 2015 Jeep Wrangler. The most recently reported issues are listed below.

1 Check Engine Light On problem

Failure Date: 03/18/2021

Started out with oil in the air filter, had the pvc valve and cam shaft replaced. Still got oil so an oil catch can was installed, then check engine light came on (air flow filter). This was causing my engine to not be able to accelerate beyond 70 mph. They changed the sensor, but again, was unable to go over 70, and on an incline would drop down to 60 and could go no faster (no engine light this time). Next day got it up to 78, engine light came on, and again could not accelerate beyond 75.

2 Check Engine Light On problem

Failure Date: 11/21/2018

Drove 1018 miles Jeep was running fine. Stopped at a hotel to check in. When I went back out to start it, the check engine light came on and stayed on and was a solid light (no blinking). Drove it thanksgiving day and took it to a dealer on Friday with the code p0304. Mechanic tells me that it needs a new cylinder head and is not safe to drive back home 1018 miles. I learned later that this is a known issue and Jeep issued a lifetime warranty covering up to 2013. After much research and reading, the issue still continues through the 2016 models. I called Jeep to ask for some assistance since I am 1018 miles from home and having to stay in a hotel for 10 days with no loaner or rental car and the repairs are estimated at $4850 (the cost at home in texas would have been $2600) and Chrysler said no! this is a known issue and continues to he a known issue. Chrysler Jeep should be fixing the problem or extending the lifetime warranty for this issue.

3 Check Engine Light On problem

Failure Date: 11/12/2016

2015 Wrangler jku sporadic stalling on both highway and residential streets. Was recently serviced for oil change and software update. Also stalled while Jeep was idol for 20 minutes but able to restart it. When it stalled. . . Instrument panel lights up and Jeep stalls. Can restart in hour with check engine light. Dealer not able to reproduce stalling after testing for 10 miles. This has happened 3 times. Dropped off at dealer again this morning.

4 Check Engine Light On problem

Failure Date: 09/09/2015

I was driving at highway speed when the check engine light was activated. The automatic transmission was not shifting properly, and did not seem to downshift after slowing down to proceed through toll booth. When I attempted to accelerate after paying the toll, the engine began to slowly accelerate as if it was in fourth or fifth gear. Shortly thereafter, the oil light began to turn on and off intermittently. I made it to a Chrysler/Jeep dealer and found a puddle of oil under my car and there was no oil registering on the dipstick. After the Jeep service department eventually looked at my car, I found out there was a cracked oil filter adapter that had to be replaced. After doing some research, I learned that this was not an uncommon problem in Jeeps. I imagine that I was fortunate that the engine did not seize or catch fire, which obviously has the potential to cause serious harm.

5 Check Engine Light On problem

Failure Date: 02/07/2015

Check engine light flashes when going uphill. Dealer claims to be unable to read the code if engine light does not stay on. Has been in for service 4 times for same issue. Once, dealer replaced a single engine coil after reading a p300 misfire code. Engine loses power and freeway speed becomes impossible to maintain for several minutes even after cresting hill and driving on level surface.




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