Powertrain
generic / SAE
P2454
Diesel Particulate Filter Pressure Sensor Circuit Low
Voltage on the DPF differential-pressure sensor signal line is below the lower threshold. Typically a short to ground or an open in the supply line.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 54
Possible causes
- Signal wire shorted to ground high
- Reference voltage line open medium
- Connector pins corroded - high contact resistance low
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–300 €
- Estimated time: 0.3–1.5 h
- Component: dpf differential pressure sensor
- Component: dpf pressure sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012