Vauxhall P2002

DPF efficiency below threshold on Vauxhall CDTi — 1.7 CDTi is the worst offender for short-trip-induced substrate damage.

Vauxhall P2002 — DPF efficiency below threshold on Vauxhall CDTi — 1.7 CDTi is the worst offender for short-trip-induced substrate damage. Typical UK independent garage cost: £220–£1800.

What actually causes P2002 on a Vauxhall

The 1.7 CDTi (Isuzu-derived) DPF is notorious for early failure — frequent regen attempts on short-trip cars, stuck-open EGR overloading the DPF with soot, and eventually substrate damage logged as P2002. The 2.0 CDTi fares slightly better. Always check EGR and pressure pipes before replacing the DPF — fitting a new one to a stuck EGR is throwing money away.

Vauxhall engines that log P2002

• 1.7 CDTi (Astra J, Zafira B/C, Meriva)
• 2.0 CDTi (Insignia, Astra J, Zafira)
• 1.6 CDTi (Astra K, Insignia B)

How we diagnose P2002 on a Vauxhall

1. TECH2/GDS2: read soot mass, ash mass, regen count and last regen success
2. Inspect EGR for carbon and stuck-open behaviour
3. Check DPF pressure pipes (well-known 1.7 CDTi failure)
4. Back-pressure test cold and hot
5. Off-vehicle DPF clean before quoting full replacement

The common misdiagnosis to avoid

1.7 CDTi P2002 cases often start with a stuck EGR or perished pressure pipes — fix those first, then attempt an off-vehicle DPF clean before quoting replacement.

Vauxhall P2002 repair cost in the UK

Expect £220–£1800 including parts and labour at an independent garage. Main-dealer quotes on Vauxhall 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

For 1.7 CDTi customers who do mostly school runs — recommend a swap to petrol next time. Even with a clean and EGR sort, the DPF will fail again within 2 years on that usage pattern.

Codes usually seen alongside P2002 on Vauxhall

• P244A
• P244B
• P2463
• P0401

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.