DTC P0753: TRANSMISSION 3-4 SHIFT SOLENOID/TRANSMISSION RELAY CIRCUITS Circuit Description Circuit is monitored continuously while ignition is on. DTC sets if voltage detected on 3-4 shift solenoid control circuit at the PCM does not match expected voltage. Possible CauseP0753 Trans 3-4 Shift Solenoid / Trans Relay Circuits The following items may be area of concern: