DPF Pressure Sensor Replacement

Your DPF pressure sensor is a important part of your DPF system. It monitors the levels of soot. You’ll know if it stops working as you’ll see a warning light on your dashboard. Don’t ignore it. A faulty DPF sensor means trouble for your car and block your DPF.

DPF Pressure Sensor Replacement

Starting from


What is a DPF pressure sensor?

A differential pressure sensor is an electronic sensor that measures back pressure before and after the DPF and determines the level of soot contained within the DPF.

How does a DPF pressure sensor work?

The DPF sensor measures the pressure drop across a DPF. A DPF pressure drop increases with increase in the soot mass accumulated in the DPF. Small soot mass accumulation results in lower DPF pressure drop, while high soot mass accumulation would yield higher DPF pressure.

What are the typical DPF pressure sensor fault codes?

P2452 – Particulate Filter Differential pressure sensor malfunction

P2453 – Diesel Particulate Filter Differential pressure sensor malfunction

P2454 – Diesel Particulate Filter Differential pressure sensor voltage too low

P2455 – Diesel Particulate Filter Differential pressure sensor malfunction

Symptoms of a failed or failing dpf pressure sensor?

Symptoms can be loss of power, reduced fuel economy, poor throttle response, limp home mode, these are some causes, mis calculating the soot content in the DPF.

How important is the DPF pressure sensor?

This is sensor is very important to the DPF system, if the sensor is not reading or sending the correct signals the DPF can become blocked quickly.

Is the DPF pressure expensive?

These sensors vary in price, some makes and models can be expensive depending on type.

Can I replace my sensor myself?

You can replace the sensor, once replaced if the sensor is not adapted/programmed to the vehicle, the ecu will think the old sensor is still fitted, if not fitted correctly can cause further issues and cause your DPF to block.

Should I replace my sensor once fitted a new DPF?

It is best practice to replace the sensor once a new DPF is fitted.

Prevention is better than cure

Klen’s DPF Cleaner & Regeneration Aid is a preventative treatment designed for drivers making a lot of short, low-speed trips, when the engine is not getting hot enough to burn off excess soot. This award winning product works by lowering the point at which the soot burns off.

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