How do I fix error P0380?

What repairs can fix the P0380 code?

1. Replacement of a glow plug or glow plug relay.
2. Replacement of heater circuit wires, connectors, and fuses.
3. Replacement of glow plug timer or module.

What does fault code P0380 mean?

OBD II fault code P0380 is a generic code that is defined as “Glow plugs, circuit A –malfunction”, and is set when the PCM (Powertrain Control Module) detects a general malfunction or failure in the glow plug control circuit on a diesel powered application.

What is glow plug control module?

The glow plug control module determines the timing and electric current required by the glow plugs based on input from the Engine Control Unit; The heating element in the glow plug is electrified so it heats up and emits visible light (hence the name);

Do you have to program a glow plug module?

Most of the time it is a simple glow plug replacement which can be diagnosed fairly quickly with something as simple as a test light. If the glow plug control module ends up needing to be replaced on 2006+ LBZ and newer engines, the glow plug control module does require programming.

What happens when glow plugs fail?

If one or more glow plugs have burned out, are carbon fouled or damaged, the engine will become progressively harder to start as temperatures drop and will idle roughly and produce white smoke from the exhaust for several minutes once it finally starts.

Is there a fuse for glow plugs?

The high current side of the glow plug system does not have a replaceable fuse from the factory. The stock system uses fusible links. Check for power at the battery side of the glow plug relay. If you have no power there you’ve got a blown fusible link.

How do I know if my glow plugs need changing?

In this article, we look at six common signs that indicate glow plugs could be faulty or damaged.

1. Something’s wrong: the engine warning light.
2. Hard starting.
3. Engine misfiring.
4. Rough idling.
5. Decreased fuel efficiency.
6. White smoke.
7. Black smoke.

Where is the glow plug control module?

A glow plug control module does this. Located on the engine and directly connected to the engine control unit, the control module uses a microprocessor to analyse input from the engine control unit to determine information related to the glow plugs’ working.