Code result

P24A1

Closed Loop Particulate Filter Regeneration Control At Limit Temperature Too High

Moderate severity

What it means

Same as P24A0 with the controller fully reducing heat input yet EGT still rising - typical for a runaway exotherm in the DPF (oil contamination).

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

  • DPF runaway exotherm

    high

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

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