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
– 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 code detected?
ECM commanded on the ASD or CNG relay and detected an open or shorted condition