HomeDTC Codes › P0671

P0671 — Cylinder 1 Glow Plug Circuit

Diesel glow plug circuit for cylinder 1 has a fault.

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

Don't guess — diagnose P0671 the right way

ScanFixAI reads every module, finds the real root cause, and tells you exactly what to check.

Download ScanFixAI Free

Common symptoms of P0671

Common causes of P0671

Repair cost & difficulty

Typical cost to fix P0671: $20-$300 · Difficulty: Easy

Pro tip: Glow plugs are $10-30 each but can be very difficult to remove if seized. Use penetrating oil and heat.

Vehicles commonly affected

Diesel vehicles

Related trouble codes

© 2026 ScanFixAI · AI-powered car diagnostics. All trouble codes · Home · Compare

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