We’ve all had to contend with intermittent electrical problems. These are typically the most difficult issue to pinpoint, as the root cause literally plays hide and seek with you. The following issue that I encountered belonged to a 2008 Dodge Ram 5500 in which the customer stated the transmission wasn’t shifting, and the check-engine light was on.
Chrysler transmissions have been difficult to diagnose for technicians since the beginning of electronic shift solenoids.
They use a separate transmission-control computer that is sometimes hard to read.
When a vehicle has been in failsafe or limp mode, it is important to check for codes to see what has caused this condition. If multiple codes are present, check to see whether there is something in common with each one.