P2002 Fault Code on Mercedes C-Class — UK Guide (2007–2021)

P2002 on the Mercedes C-Class — what you need to know

Mercedes C-Class diesel P2002 DPF fault occurs on CDI engines used for short journeys. Mercedes DPF regeneration requires sustained motorway driving. A Mercedes dealer forced regeneration costs £80–£150 but independent garages with the right tools can do this for less.

The affected engine variants are: C200 CDI, C220 CDI, C250 CDI. If your Mercedes C-Class is showing fault code P2002, use our AI Diagnostic Report for a full UK-specific analysis including the exact repair costs for your engine and year.

Common causes on the Mercedes C-Class

While P2002 can have several root causes, the most common reasons this code appears on the Mercedes C-Class in UK conditions are related to the specific engine management and emissions systems fitted to this vehicle. Always scan for related fault codes before replacing any parts — a secondary code can point directly to the root cause and save hundreds of pounds.

For the complete diagnosis guide including step-by-step testing procedures, see our main P2002 fault code page.

UK repair costs for P2002 on the Mercedes C-Class

Typical UK repair costs for P2002 on the Mercedes C-Class range from £100 to £1500 depending on the exact cause, your engine variant and whether you use an independent garage or a main dealer. Independent garages are typically 30–50% cheaper than franchised dealers for this type of repair.

Always get at least two quotes. Use our AI Diagnostic Report to understand the most likely cause for your specific Mercedes C-Class before spending anything at a garage.

P2002 MOT implications for the Mercedes C-Class

An active P2002 fault code on your Mercedes C-Class is likely to cause an MOT failure. Under DVSA testing standards, an illuminated check engine light is an automatic MOT failure regardless of how the vehicle drives. You must resolve this fault before your MOT test. Read our full MOT guide for more information.