6 people reported this problem
PCM Software Update Available to Correct Various Driveability Issues on Jeep Patriot
2008 Jeep Patriot 91,000 mi, Visitor
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 Patriot 105,000 mi, Visitor
Just the engine ligth turn on and the mechanical said the pcm is not working properly
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.