Powertrain
generic / SAE
P20DE
Exhaust Aftertreatment Fuel Pressure Sensor Circuit Range/Performance
Aftertreatment fuel-pressure sensor reads in range but plausibility fails — pressure does not rise during prime, drift across a regeneration.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / DE
Possible causes
- Sensor drift high
- Sensor element aged beyond calibration window low
- Sensor mounting loose - signal damping low
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 150–1000 €
- Estimated time: 0.7–3 h
- Component: aftertreatment fuel pressure sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012