P0657 VOLKSWAGEN 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

When is the obd code mean?

The Engine Control Module (ECM) has detected an interruption to the transmission control solenoids.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)