Diagnostic trouble code
P0380
Powertrain
Unverified
Powertrain (P)
Ignition / Glow
Glow plug / heater circuit malfunction
The diesel glow plug circuit has a fault.
What P0380 means
The diesel glow plug circuit has a fault.
Symptoms you may notice
- Check engine light
- Hard cold start
- White-grey smoke when cold
Possible causes
- Failed glow plug
- Blown glow plug fuse
- Glow plug relay fault
- Wiring fault
Causes are listed from most to least likely for this code. Confirm the actual cause with the diagnostic checks before replacing parts.
Checks to run
- Measure each glow plug resistance
- Check the fuse and relay
- Test the circuit
Tools you may need
Multimeter
Verification and editorial notes
UnverifiedThis page has not been technically verified yet. Confirm the diagnosis and measurements in the workshop manual for your vehicle.
Diagnose before replacing. A diagnostic trouble code identifies the circuit or
system the control unit flagged. It does not prove that a particular part has failed. Confirm
the cause with the measurements and checks above, and follow the workshop manual for your exact
engine before replacing parts or clearing codes.