Particulate filter DPF / FAP warning light: meaning and…

Particulate filter DPF / FAP

The exact symbol can vary between makes and models. Also check the message displayed by the vehicle.

How urgent is it?

Follow the handbook promptly; with additional warnings or limp mode, arrange diagnosis.

How to recognise it

Rectangular dotted filter with exhaust lines.

What it can mean

It can request filter cleaning or indicate a system problem; the exact message matters.

What to do

Follow only the cleaning instructions for your vehicle. Do not initiate forced regeneration without diagnosis. Seek service for additional warnings or limited power.

Before clearing the light or codes

Photograph the dashboard message and save all codes, the reporting module, fault status and freeze-frame data. Clearing can remove useful evidence without repairing the cause.

Useful terms

From warning light to inspection

A warning light can have many causes. The example codes below have NOT been scanned from your vehicle.