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P2452 Fault Code – Particulate Matter Trap Differential Pressure Sensor Circuit
The OBD code P2452 indicates an issue with the DPF Pressure Sensor ‘A’ Circuit. This could be due to a faulty pressure sensor, wiring problems, or issues with connectors, which can result in incorrect pressure readings and ineffective DPF filter performance.
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 | Diesel Particulate Filter Pressure Sensor ‘A’ Circuit |
| Meaning | Possible malfunction within the circuit of the DPF pressure sensor ‘A’ |
| Outcome | Moderate, if not fixed, incorrect pressure readings can lead to improper DPF regeneration, resulting in increased emissions and potential clogging |
| Causes | – Faulty DPF pressure sensor – Issues with the pressure sensor ‘A’ circuit for the DPF – Connector or wiring problems |
| Checks | – Check the DPF sensor – Check the pressure sensor ‘A’ circuit of the DPF – Check wiring and connectors |
| Fixes | – Replace faulty pressure sensor |
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.