P0384

DTC P0384, sometimes indicated as P038400 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the ignition system causing glow plug control module control circuit high.

The glow plug control module (GPCM) is responsible for regulating the current to the glow plugs. If the GPCM detects a fault, it will set a code and turn on the check engine light. There are a few things that can cause this code to set, including a bad GPCM, a bad glow plug, or a wiring issue.
If you have this code, the first thing you should do is check the wiring to the glow plugs. Make sure that all of the connectors are tight and that there is no corrosion. If the wiring is good, then you may have a bad glow plug or GPCM. You can test the glow plugs with a test light, and you can test the GPCM with a scan tool.
If you find that the problem is with the glow plugs, you may need to replace them. If the problem is with the GPCM, you may need to replace it.

• P0384: Glow Plug Control Module Control Circuit High
• P0384: Glow Plug Module Control Circuit High
• P0384: Glow plug control module – circuit high
• P0384 00: Glow plug control module - circuit high