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P2003 Fault Code – Particulate Trap Efficiency Below Threshold
The OBD code P2003 indicates an issue with the efficiency of the DPF (Diesel Particulate Filter), a crucial component in reducing emissions by trapping soot from diesel engines.
Affected vehicles include:
Alfa Romeo, Audi, BMW, Chevrolet, Chrysler, Citroen, Dodge, Fiat, Ford, Honda, Hyundai, Jaguar, Kia, Lancia, Land Rover, Mazda, Mercedes, Mini, Mitsubishi, Nissan, Opel, Peugeot, Porsche, Renault, Saab, Seat, Skoda, Subaru, Suzuki, Vauxhall, Volkswagen, Volvo
| Fault | Particulate Filter Efficiency Below Threshold Bank 2 |
| Meaning | Diesel Particulate Filter Efficiency Below Threshold |
| Outcome | If not fixed, can lead to reduced vehicle performance, increased emissions, further engine damage and potentially costly repairs |
| Causes | – Blocked or damaged DPF – Faulty DPF sensors – Engine performance issues |
| Checks | – Inspect and test the diesel particulate filter – Check DPF sensor functionality – Evaluate engine performance and emissions |
| Fixes | – Clean the DPF (lowest cost option) – Replace the DPF (most expensive option) |
If your DPF filter has moderate to severe build-up of soot, cleaning may be the best option in order to avoid a complete DPF replacement. Submit the Click & Collect form if you would like Valley Filters to professionally clean your DPF.