Code result

P236C

Cylinder 12 Pressure Too High

Moderate severity

What it means

Cylinder 12 measured peak combustion pressure is above the calibrated maximum — typically pre-ignition, knock, over-fuelling, or runaway combustion.

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

  • Injector overdelivery on cylinder 12

    high

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

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