P245E
Particulate Filter Pressure Sensor B Circuit
A general circuit fault on the secondary differential pressure sensor B across the DPF - measures backpressure for the regeneration strategy.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Common causes
Ordered by how often each turns out to be the cause.
- Open in sensor or wiringCommon
Parts involved
- DPF Pressure Sensor B
P245E is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.