OBD-II code · Powertrain (generic, extended)
P2452 Diesel Particulate Filter Pressure Sensor Circuit
A general electrical fault on the DPF differential-pressure sensor circuit. Without a valid pressure reading the ECU cannot estimate soot load and may inhibit regeneration.
Is it safe to drive with P2452?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDPF pressure sensor failed
- PossibleSensor sample hoses clogged with soot
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Dpf Differential Pressure Sensor, Dpf Pressure Sensor Wiring
Related codes
- P244FExhaust Temperature Too High For Particulate Filter Regeneration Bank 2
- P2450EVAP System Switching Valve Performance/Stuck
- P2451EVAP System Switching Valve Stuck Closed
- P2453Diesel Particulate Filter Pressure Sensor Circuit Range/Performance
- P2454Diesel Particulate Filter Pressure Sensor Circuit Low
- P2455Diesel Particulate Filter Pressure Sensor Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.