Powertrain
generic / SAE
P2293
Fuel Pressure Regulator 2 Performance
The high-pressure fuel pressure regulator (volume control or pressure control valve on a direct-injection rail) is not maintaining commanded pressure. Often the rail-pressure sensor reading drifts away from the setpoint under load.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number2 / 93
Possible causes
- Pressure regulator worn or sticking high
- High-pressure pump weak medium
- Rail pressure sensor drift 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: 200–1500 €
- Estimated time: 1–5 h
- Component: fuel pressure regulator
- Component: high pressure fuel pump
- Component: rail pressure sensor
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012