Code result

P066C

Cylinder 2 Glow Plug Control Circuit Low

Moderate severity

What it means

The control line for the glow plug on cylinder 2 is shorted to ground or the plug is internally shorted.

Is it safe to drive?

Use caution

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.

Most likely causes

  • Control line shorted to ground

    high

    One of the most commonly reported causes for this code — check this first.

  • Connector pins corroded - high contact resistance

    low

    Less common, but worth ruling out after the more likely causes.

  • Harness chafing through insulation

    low

    Less common, but worth ruling out after the more likely causes.

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