What does po380 code mean?
Glow Plug/Heater Circuit
What does OBD-II fault code P0380 mean? OBD-II Code P0380 is defined as a Glow Plug/Heater Circuit “A” Malfunction. The purpose of the Glow Plugs on a diesel engine is to heat up the combustion chambers to enable a quicker cold start.
Where is the glow plug module on a Duramax?
Locate the glow plug controller to the driver side of the turbocharger near the firewall. Remove the glow plug power feed connector (round connector, left side of glow plug module) by pressing the two ridged segments of connector shell and pulling away from and out of the glow plug module.
How do you test a glow plug controller on a Duramax?
To test your glow plugs, simply connect a 12-volt test light to the positive battery terminal. Then disconnect the wires from each of your glow plugs and touch the probe of the test light to the terminal of the glow plug itself (not the wiring harness).
Is P0380 serious?
How serious is the P0380 code? A detected P0380 code is unlikely to render a vehicle as unable to operate, but it will keep the engine from running properly.
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.
Does a glow plug control module need to be programmed?
Where is number 1 glow plug on a Duramax?
Where is the number 1 glow plug on Duramax? The number 1 glow plug is on the passenger side of the vehicle. Number 1, 3, 5, 7 are on the passenger side. That means the odd number of glow plugs are on the passenger side.
How do I know if my glow plugs are bad Duramax?
Six signs it’s time to replace your glow plugs
- Hard starting. A hard starting engine is the most common indicator of damaged glow plugs.
- Engine misfiring.
- Rough idling.
- Decreased fuel efficiency.
- White smoke.
- Black smoke.