Error code

OBD2 P0670

OBD2P0670
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Glow Plug Module Control Circuit.

Severity

highCan drive, but starting issues may occur in cold weather.

Summary

P0670 indicates a malfunction in the glow plug control module or its circuits on diesel engines. This issue affects the circuit that controls and monitors the glow plugs for engine start-up.

Symptoms

  • Engine difficulty starting, especially in cold weather
  • Check Engine light illuminated

Common Causes

  • Damaged wiring or connectors
  • Blown fuse(s) or fusible links
  • Defective glow plug control module
  • Faulty engine coolant sensor
  • Failed ignition switch
  • One or more defective glow plugs

Diagnosis

  1. Inspect wiring and connectors for damage
  2. Check fuses and fusible links
  3. Test engine coolant sensor
  4. Examine ignition switch functionality
  5. Evaluate glow plug control module

Fixes

  • Replace faulty components such as the glow plug control module, wiring, or sensors

FAQ

Can I drive with P0670?

You can drive but starting issues may occur in cold weather.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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