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P0674 — Cylinder 4 Glow Plug Circuit

Diesel glow plug circuit for cylinder 4 fault.

Severity: MediumRepair: $20-$300Difficulty: Easy

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Common symptoms of P0674

Common causes of P0674

Repair cost & difficulty

Typical cost to fix P0674: $20-$300 · Difficulty: Easy

Pro tip: Multiple failed glow plugs may indicate a glow plug module failure rather than individual plugs.

Vehicles commonly affected

Diesel vehicles

Related trouble codes

P0671P0672P0673

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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.