Hi everyone,
I’m hoping someone here might be able to help me figure out the correct DPF pressure sensor for my car. There seems to be a lot of conflicting information out there.
Car details:
Model: Audi A5 Sportback
Year: 2016
Engine code: CNHA-PVM
VIN: WAUZZZ8T1GA054215
Background:
The car has had a DPF issue before. In 2021, the previous owner had the DPF pressure sensor replaced and a forced regeneration done. The part installed at that time was 03L 906 051 B.
Now, in 2025, I’m getting the same DPF error again (P2002 - Particulate trap bank 1 efficiency below threshold).
I started looking for a replacement sensor and here’s what I found:
PartsHaus.co.uk recommends: 04L 906 051 C or 04L 906 051 K
Caffyns Audi (UK dealership) recommends: 03L 906 051 D
The current sensor fitted: 03L 906 051 B
As far as I understand, the CNHA engine is part of the EA288 platform and might not be fully compatible with the older “B” sensor. But I’m struggling to understand:
Why are multiple different part numbers being recommended for the same engine?
Which sensor is actually the correct one for the CNHA engine and why?
Could using the wrong sensor affect DPF performance or trigger false regeneration cycles/errors (like P2002)?
If anyone has dealt with this or knows how to verify definitively based on the VIN or engine code, I would really appreciate your help.
Thanks in advance for your time!
Marian
Hi everyone, I’m hoping someone here might be able to help me figure out the correct DPF pressure sensor for my car. There seems to be a lot of conflicting information out there. Car details: Model: Audi A5 Sportback Year: 2016 Engine code: CNHA-PVM VIN: WAUZZZ8T1GA054215 Background: The car has had a DPF issue before. In 2021, the previous owner had the DPF pressure sensor replaced and a forced regeneration done. The part installed at that time was 03L 906 051 B. Now, in 2025, I’m getting the same DPF error again (P2002 - Particulate trap bank 1 efficiency below threshold). I started looking for a replacement sensor and here’s what I found: PartsHaus.co.uk recommends: 04L 906 051 C or 04L 906 051 K Caffyns Audi (UK dealership) recommends: 03L 906 051 D The current sensor fitted: 03L 906 051 B As far as I understand, the CNHA engine is part of the EA288 platform and might not be fully compatible with the older “B” sensor. But I’m struggling to understand: Why are multiple different part numbers being recommended for the same engine? Which sensor is actually the correct one for the CNHA engine and why? Could using the wrong sensor affect DPF performance or trigger false regeneration cycles/errors (like P2002)? If anyone has dealt with this or knows how to verify definitively based on the VIN or engine code, I would really appreciate your help. Thanks in advance for your time! Marian
