What Does P0670 Code Mean?

    OBD-II Code P0670 is defined as a Glow Plug Control Module Control Circuit/Open

    The Glow Plug Module controls the Glow Plugs. Diesel engines use Glow Plugs to heat up the combustion chambers to enable a quicker cold start. When the engine control module (PCM) detects a problem with the Glow Plug Control Module, it will set code P0670.

    P0670 Symptoms

    • Engine may not start
    • Hard engine start

    Common Problems That Trigger the P0670 Code

    • Glow plug control module failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

    Common Repairs Needed for the P0670 Code

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