Code result

P26D0

Engine Coolant Pump Control Module System Voltage Low

Moderate severity

What it means

The smart coolant pump module reports the system voltage below operating range. Pump output is reduced or disabled to protect the module.

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

  • Weak battery sags voltage under load

    high

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

  • Alternator output below regulation point

    medium

    A plausible cause — test and verify before replacing parts.

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