P0380 Glow Plug/Heater Circuit "A"

Powertrain Severity: Moderate Generic OBD-II

Fault in the glow plug circuit of a diesel engine.

Common causes

  • Failed glow plug
  • Faulty glow plug control module
  • Wiring damage

Symptoms

  • Hard cold starts
  • White smoke after start
  • Glow plug warning light

What to check

  1. Measure resistance of each glow plug
  2. Check control module and fuse
  3. Inspect wiring

Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0380, follow the service information for that make and model.