P0384Mclaren GtYears: 1996 - 2026
Glow Plug/Heater Circuit E Malfunction
Reviewed by ASE Certified Technician
What does this mean?
Code P0384 indicates a malfunction in the glow plug/heater circuit (E Malfunction). Glow plugs are used in diesel engines to heat the combustion chamber for cold starts.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Mclaren Gt models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Failed glow plug or glow plug module (diesel)
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
Internal PCM/ECM failure
Symptoms to Watch For
- Check Engine Light is illuminated
- Diesel engine hard to start in cold weather
- Glow plug indicator light stays on (diesel)
- White or blue smoke from exhaust
- Rough or unstable idle