Glow Plug Control Module 1 Control Circuit High

Where it lives

For P0384, the module sits on the circuit this code reports. The description of P0384 reports a fault at the module.

Check these first

• A short to power on the control module 1 command wire
• A failed glow plug control module
• High resistance in the glow plug circuit
• A bad glow plug on the module 1 bank
• A faulty ECU driver for the module

What to do next

1. Check for voltage on the control wire with the module unplugged
2. Test the glow plug circuit for high resistance
3. Measure each glow plug on the module 1 bank
4. Inspect the module 1 connector for damage or heat
5. Replace the glow plug control module if the wiring tests good
6. Clear the code and retest

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