Code result

P246D

Particulate Filter Pressure Sensor A and B Correlation

Moderate severity

What it means

The two DPF differential pressure sensors A and B disagree by more than the diagnostic tolerance - one of them has drifted.

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

  • One sensor has drifted

    high

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

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