6 people reported this problem
PCM Software Update Available to Correct Various Driveability Issues on Jeep Patriot
3 people shared problem details
2008 Jeep Patriot91,000Visitor
jeep runs rough in gear not in park or nuetral and when at a stop sign or light, the motor has a shake. the P540 code is on
2009 Jeep Patriot105,000Visitor
Just the engine ligth turn on and the mechanical said the pcm is not working properly
2008 Jeep PatriotVisitor
When i stop it doesn't want to move. If i shut it off for a few minutes and start it back up its ok for a short while, then it happens again.
Incorrect fault codes may set in the transmission control module (TCM) resulting is misdiagnoses. The TCM software should be checked for the latest updates before diagnosing stored fault codes.
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