Powertrain
generic / SAE
P20DD
Exhaust Aftertreatment Fuel Pressure Sensor Circuit
A general electrical fault is reported on the aftertreatment fuel-pressure sensor — used to verify the dedicated HC-dosing rail is primed.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number– / DD
Possible causes
- Sensor failed high
- Harness fault medium
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