Code result

P03CC

Cylinder 6 Pressure Too Low

High severity

What it means

Cylinder 6 measured peak combustion pressure is below the calibrated minimum — typically low compression, weak injection, or stuck-open exhaust valve.

Is it safe to drive?

No — stop driving

This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.

Most likely causes

  • Low compression on cylinder 6

    high

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

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