OBD II Fault Code

  • OBD II P0384

OBD-II Code Engine may not start is defined as a Glow Plug Control Module Control Circuit High

The Glow Plug Module controls the Glow Plugs. Diesel engines use Glow Plugs to heat up the combustion chambers to enable a quicker cold start. When the engine control module (PCM) detects a problem with the Glow Plug Control Module, it will set P0384.

Engine may not start Symptoms

  • Engine may not start
  • Hard engine start

Common Problems That Trigger the P0384 Code

  • Glow plug control module failure
  • Powertrain Control Module (PCM) failure
  • Wiring issue

Common Repairs Needed for the P0384 Code

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