Powertrain
generic / SAE
P2456
DPF Differential Pressure Sensor Circuit Intermittent
The DPF differential-pressure sensor delivers an intermittent signal — usually a marginal connector or a chafed wiring section that breaks contact during temperature or vibration.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 56
Possible causes
- Connector intermittent high
- Wiring chafed against bracket medium
- Harness routed against vibrating component low
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 50–250 €
- Estimated time: 0.3–1.2 h
- Component: dpf differential pressure sensor
- Component: dpf pressure sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012