DTC P1388: Auto Shutdown Relay Control Circuit: Description

Auto Shutdown (ASD) relay control circuit is monitored with ignition on and battery voltage more than 10.4 volts. DTC will set in Powertrain Control Module (PCM) memory when PCM senses a short or open in ASD relay control circuit. Possible causes for DTC to set are: defective ASD relay, defective PCM, defective connectors or defective wiring.