The Check Engine Light may Illuminate Erroneously on Chrysler PT Cruiser

"False" trouble codes may cause erroneous illumination of the Check Engine Light. Updating the PCM software can often correct this concern.

RepairPal Verified
Average mileage: 82,522 (25,000–110,000)
5 model years affected: 2003, 2005, 2006, 2007, more2008
21 people reported this problem
12 people shared problem details
engine light keeps coming on after replacing parts
False Check Engine Light Started when the Car was Only 2yrs Old
engine light on, dealership replace PCM, engine light on again after 20 miles, dealership has replaced TIPM, 4 times and the engine light still comes on saying bad TIPM, dealership says does not know what the problem is, therefore they can not fix it.
car intermittently runs rough then fine for days several sensors were replaced but same problem
2006 P T Cruiser, engine light keeps coming on and can not figure out why
engine light comes on goes off after 4 or 5 days had to replace the radiator after getting my last oil change cost was $529.00 which i thought was a bit high let me know what you think
after getting oil change the light indicator symbol appeared. i don't notice a change in the way my car drives? could this be a false alarm?
P1603-PCM INTERNAL DUAL-PORT RAM COMMUNICATIONFAILURE
I get false check. Engine light and oil low light ofter
No solved yet going to shop Tuesday.
I just had the PCM replaced , new not rebuilt, and the engine light came on. Need to get my car smogged but can't grrrrrr with light on
2006 PT Cruiser Repair engine light.
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