Code result

P261F

Coolant Pump A Control Circuit Stuck On

Moderate severity

What it means

The first coolant pump runs even when no command is active. Driver is stuck on or the wire is shorted to a permanent supply.

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

  • ECU output driver stuck on

    high

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

  • Control wire shorted to a permanent B+ supply

    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.

Get the full diagnosis

Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.

Diagnose P261F free

No credit card required