The OBD code P242F indicates that the DPF (Diesel Particulate Filter) is restricted or blocked with ash accumulation.
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 Restriction Bank 1 |
| Meaning | Diesel Particulate Filter is blocked or restricted |
| Outcome | Serious, if not fixed, can lead to reduced vehicle performance, increased emissions and potentially costly repairs |
| Causes | – Blocked, restricted or malfunctioning DPF – Soot accumulation in the DPF – Calibration or software issues – Faulty DPF sensors – Exhaust system damage or leaking |
| Checks | – Check the DPF for blockage or damage – Inspect the exhaust system for leaks or damage – Verify soot level in the DPF – Check Differential Pressure Sensor for accuracy – Ensure software calibrations are up to date |
| 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.