check engine light code for bad pcm?
01-16-2015, 05:41 AM
#1
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Year: 1997
Model: Grand Cherokee
Engine: 4.0L STRAIGHT 6!!!
check engine light code for bad pcm?
I have a 97 JGC 6cy 4wheel
will my pcm throw a check engine light if its going bad or malfunctioning?
If it has codes, is it possible the PCM can malfunction with out throwing a code?
thanks
will my pcm throw a check engine light if its going bad or malfunctioning?
If it has codes, is it possible the PCM can malfunction with out throwing a code?
thanks
01-17-2015, 05:49 AM
#2
Old fart with a wrench
Yes, it will throw a code 53 or P0601 for an internal failure. It can cause a lot of problems because of bad sensor inputs without actually failing.
01-19-2015, 05:43 AM
#3
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Year: 1997
Model: Grand Cherokee
Engine: 4.0L STRAIGHT 6!!!
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