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: 82,551 (25,000–110,000)
5 model years affected: 2003, 2005, 2006, 2007, more2008
18 people reported this problem
10 people shared problem details
False Check Engine Light Started when the Car was Only 2yrs Old
engine light keeps coming on after replacing parts
car intermittently runs rough then fine for days several sensors were replaced but same problem
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
P1603-PCM INTERNAL DUAL-PORT RAM COMMUNICATIONFAILURE
2006 P T Cruiser, engine light keeps coming on and can not figure out why
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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