P1388 JEEP ASD or CNG Relay Control Circuit

Possible causes – Faulty ASD Relay– Faulty CNG Relay– ASD or CNG Relay harness is open or shorted– ASD or CNG Relay circuit poor electrical connection– ASD or CNG Relay poor ground or supply voltage condition When is the obd code mean? ECM commanded on the ASD or CNG relay and detected an open or…