Actuator Supply Voltage ‘A’ Circuit Open
Table of contents
P0657 Possible Causes
- Faulty Transmission Solenoids
- Transmission Solenoids harness is open or shorted
- Transmission Solenoids circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How do I fix code P0657?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0657 code
The cost of diagnosing the P0657 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0657 Description
The Powertrain Control Module (PCM) monitors the transmission solenoid circuits by supplying voltage to the solenoids through this circuit, then checking for voltage returning from the solenoids through each of the inpidual solenoid control wires. If one of the solenoid return circuits does not have the correct voltage returning to the PCM, the PCM will set a code for that solenoid.
However, DTC P0657 sets when ALL of the solenoids do not have the correct voltage returning to the PCM all at the same time.