That code indicates that there's an internal failure inside the
powertrain control module. Some internal failure codes are false and
can be corrected with a software update. Most are not and require
replacement of the component throwing the internal failure code.
Unfortunately, I feel as though you will need a new computer in order
to correct this fault code.
Also, one thing to keep in mind is that if you decide to use a salvage
yard part then you need to be aware of a few glitches you may run in
to. Vehicles with SKIM (grey headed keys) have special chips in them
that prevent swapping engine controllers, Body controllers and other modules that have the VIN encripted in to them. This will mean that if
you put in a module that originally did not come in your car you may be
carrying the car to the dealer on a roll-back to have them replace the
locked-out modules.
RESUME: This is an internal problem with the pcm where
there is no communication between the internal processors. Then vehicle
may or may not run well, but as far as fixing the light the only way is
to replace the PCM.
Hope helps.
Basically that means that there is an interal fault in the Powertrain Control Module (PCM). There have been many reported PCM failures on Chrysler/Dodge products although it is possible for this to happen on any vehicle. In Dodge/Chrysler products, a P0601 trouble code means that a serial communication failed inside the computer at least 6 times. goodluck
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