Code result

P26CB

Engine Coolant Pump Performance/Stuck Off

Moderate severity

What it means

The main electric coolant pump is commanded on but does not run.

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

  • Pump motor seized by sediment

    high

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

  • Cracked rotor magnet decouples drive

    medium

    A plausible cause — test and verify before replacing parts.

  • Carbon or debris buildup preventing free movement

    low

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

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