DPF efficiency below threshold on Renault — K9K dCi DPF clogged with belt-in-oil debris (newer engines) and Megane regen failure.
Renault P2002 — DPF efficiency below threshold on Renault — K9K dCi DPF clogged with belt-in-oil debris (newer engines) and Megane regen failure. Typical UK independent garage cost: £180–£1600.
What actually causes P2002 on a Renault
Renault dCi P2002 has an added complication on K9K belt-in-oil engines — debris contaminates the DPF beyond normal soot. Always inspect belt condition alongside.
Renault engines that log P2002
- 1.5 dCi K9K (Megane/Captur)
- 1.6 dCi R9M (Megane/Kadjar)
How we diagnose P2002 on a Renault
- Belt-in-oil inspection
- DPF soot/ash read
- Forced regen via Clip
- DPF clean or replace
The common misdiagnosis to avoid
Don't quote a DPF on K9K belt-in-oil without inspecting the belt — failed belt + new DPF is a £2k mistake.
Renault P2002 repair cost in the UK
Expect £180–£1600 including parts and labour at an independent garage. Main-dealer quotes on Renault are usually higher for the same job, and the spread exists because the cheap cause and the expensive cause throw the same code — pay for the diagnosis before you pay for parts.
Bob's workshop tip
K9K belt-in-oil P2002 — belt first, DPF second. Order matters.
Codes usually seen alongside P2002 on Renault
- P2463
Symptoms drivers report with P2002
- The 'Engine Service Now' message on the dash, often without a limp mode initially.
- Thick black soot deposits around the inside of the tailpipe (it should be clean enough to eat off).
- A heavy smell of diesel fumes inside the cabin when sitting at traffic lights.
- The car seems to perform fine but the 'DPF Full' warning keeps popping up every 50 miles.
- Excessive cooling fan noise because the car is constantly trying (and failing) to start a regeneration.
Repairs that clear P2002
- Static regen on scan tool
- Replace pressure sensor
- Injector leak-off test
- Chemical DPF clean, replace if blocked >80%
For the generic, all-makes explanation of this code — meaning, every known cause and UK cost bands — see our P2002 guide.