Powertrain
generic / SAE
P2C04
Fuel Pressure Regulator D Control Circuit High
Voltage on the fuel pressure regulator D control line is above the expected window. Wire shorted to B+ or coil open.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberC / 04
Possible causes
- Control wire shorted to B+ high
- Open regulator coil medium
- Connector pins corroded - high contact resistance 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: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 1–4 h
- Component: fuel pressure regulator d
- Component: wiring harness
- Component: fuel rail
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012