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Hello and welcome! My name is ***** ***** I can assist you with your question. If the transmission solenoid body assembly has been replaced, then the only other possible cause would be a bad PCM or a wiring issue between the PCM and the transmission shift solenoid B. Here is the definition for this code.
P0755 Shift Solenoid 'B' Control Circuit Malfunction
Possible CausesSSB solenoid Ignition circuit is open (check fuse from power distribution)SSB solenoid control circuit is openSSB solenoid has failedPCM has failed.SSB solenoid connector is damaged (check pins for damage)
Here is a wiring diagram for this circuit.
I have never heard of learning the transmission. Now the PCM may learn the shift points as you drive the vehicle after the battery has been disconnected, but there is no a relearn for the transmission or solenoid pack.
I would ohm out the wire from the PCM to the transmission solenoid pack.
YES, you will need a volt/ohm meter. You will need to hook up one side to the wire going to the signal wire going to the transmission B solenoid and the other wire going to that same wire but at the PCM. If the wire is in good shape, it will read 0 ohms. If the wire is open or broken (causing this problem), it will read OL.
It might be easier to speak over the phone. Would you be willing to do so?
YES, thats correct. We check the wire from the PCM going to the transmission and or solenoid. Then if needed, we check the ground from the PCM using the voltmeter set on the 20 volt DC scale.
Sounds good! I will be looking forward to hearing from you! Have a good night!