P1388high severityPowertrain
Auto Shutdown Relay Circuit
on 2018 Dodge Challenger 6.2L V8 Hellcat (707hp) · RWD
What this code means
The PCM has detected a malfunction in the Auto Shutdown (ASD) relay circuit. The ASD relay provides power to the fuel injectors, ignition coils, oxygen sensor heaters, and other critical engine management components.
Symptoms
- Check Engine Light
- Engine may not start
- Engine stalls and will not restart
- Intermittent no-start condition
- Loss of injector and coil power
Common causes
- Faulty ASD relay
- Wiring open or short in ASD relay circuit
- Corroded ASD relay socket
- PCM driver circuit failure
- Blown ASD fuse
Diagnostic steps
- Swap ASD relay with a known good relay
- Check ASD relay socket for power, ground, and PCM control signal
- Inspect ASD relay wiring for opens or shorts
- Test PCM ASD control output
- Check ASD fuse
Repair notes
Replace the ASD relay and inspect the relay socket for corrosion or damage.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1