The diesel particulate filter pressure sensor is used to measure the difference of that parameter before and after filtering element. The obtained data are transmitted to the engine electronic control unit. If these results exceed the allowable values, then the regeneration is activated which involves burning the soot.
5 tips on how to use and replace it
- Replace the component when it gets out of order. The exact service life isn’t specified.
- Pay your attention to the fact that the serviceability of the part is tested automatically every time before the power unit is started. If the part is faulty, the corresponding dashboard warning light goes on.
- Install new diesel particulate filter pressure sensors when you replace the filter. The recommended intervals for this procedure are stated in the technical documentation of the vehicle. When doing this, it is advisable also to mount new pressure hoses.
- It is better to entrust the replacement of the part to specialists of an automotive repair shop. They’ll do computer-aided diagnostics of the whole unit.
- When first symptoms of the faulty devices or filtering element appear, check the hoses for integrity. In most cases, they can be replaced separately.
Malfunctions of a diesel particulate filter pressure sensor, their causes and symptoms
- Mechanical damage. For example, the contacts inside and outside the device can be broken due to a strong hit. The light on the dashboard will warn you about it. Besides, in this case, the filtering element gets out of order very quickly: there are such symptoms as high exhaust smoke opacity, increased fuel consumption, unstable engine operation when idling.
- Software failure. When used for too long, the device may show incorrect readings. You can find it out by doing computer-aided diagnostics. To fix the problem, you have to replace the element and reset the trouble code.
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