Code result

P26F5

Coolant Pump C Control Circuit Low

Moderate severity

What it means

Voltage on the third coolant pump control line is below the expected window. Usually a short to ground or a shorted motor winding.

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 wire shorted to ground

    high

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

  • Internal short in pump motor winding

    medium

    A plausible cause — test and verify before replacing parts.

  • Connector pins corroded - high contact resistance

    low

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

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