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P0381 — Glow Plug/Heater Indicator Circuit

Glow plug indicator (wait-to-start light) circuit fault.

Severity: LowRepair: $30-$200Difficulty: Easy

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Common symptoms of P0381

Common causes of P0381

Repair cost & difficulty

Typical cost to fix P0381: $30-$200 · Difficulty: Easy

Pro tip: The wait-to-start light tells you glow plugs are warming up. If it doesn't light, you might try to start too early in cold weather.

Vehicles commonly affected

Diesel vehicles

Related trouble codes

P0380

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.