P0657 Volvo Actuator Supply Voltage A Circuit Open
Possible causes
– Faulty Engine Control Module (ECM)
– ECM harness is open or shorted
– ECM circuit poor electrical connection
– ECM Programming
– ECM harness is open or shorted
– ECM circuit poor electrical connection
– ECM Programming
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0657 Volvo Description
The Transmission Control Moduel (TCM) has detected a voltage supply fault to the hydraulic control unit
Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo XC60,Volvo V70,Volvo V50,Volvo V40,Volvo S90,Volvo S80,Volvo S60