Have Transmission Questions? Ask a Mechanic for Answers ASAP
That sounds like a PCM problem from the p1603. The P0700 is a generic transmission fault and with no other codes I wouldn't start looking at the transmission without eliminating the PCM as a possible cause. The p0138 is an oxygen sensor fault, which could also be caused by the PCM.
Here is the method to diagnose the PCM:
1. Monitor the powers and grounds to the Powertrain Control Module (PCM), especially the ignition feeds at pin 11 and 12 of the C1 PCM connector.2. If a power or ground supply is going away or getting weak when the problem occurs and the trouble codes set, repair that circuit.3. If the power and ground supplies remain constant during the code setting, replace the PCM.
Here is the diagnostic chart from Chrysler.
Sorry for the brief response, but I'm headed to lunch, but wanted to get started before I take off for an hour. I'll be back shortly.
I wanted to check and see if you needed any additional information. I would also appreciate a positive rating if I have been of some assistance. Thanks!