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P2453 Fault Code – Diesel Particle Filter Differential Pressure Sensor: Implausible Signal
The OBD code P2453 relates specifically to the DPF Pressure Sensor “A” and its range or performance within the system. The P2453 code suggests that the signal coming from the pressure sensor is implausible or out of the expected range, which indicates potential issues with the sensor itself, the DPF, or related components.
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 | DPF Pressure Sensor “A” Circuit Range/Performance issue |
| Meaning | Performance issue within the circuit of the DPF pressure sensor ‘A’ |
| Outcome | May lead to reduced engine performance, increased emissions, and potentially costly engine damage if not addressed |
| Causes | – Faulty DPF pressure sensor – Damaged or blocked Diesel Particulate Filter – Exhaust leaks affecting pressure readings – Connector or wiring problems |
| Checks | – Check the DPF sensor – Inspect the DPF for blockages or damage. – Monitor pressure readings at various engine states to diagnose issue – Check wiring and connectors |
| Fixes | – Replace faulty pressure sensor – Clean the DPF |
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.