Code result

P26C5

Exhaust Flow Control Valve A Control Circuit / Open

Moderate severity

What it means

The controller cannot drive the exhaust flow control valve A (used for exhaust acoustics, EGR boost, or aftertreatment heating).

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

  • Open coil in valve solenoid

    high

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

  • Broken control wire

    medium

    A plausible cause — test and verify before replacing parts.

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