Powertrain
generic / SAE
P00C9
Fuel Pressure Regulator A Solenoid Supply Voltage Control Circuit Low
Supply voltage to fuel pressure regulator A solenoid below expected range — fuse, relay or wiring fault.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / C9
Possible causes
- Supply fuse blown or relay failed high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation 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: possible
- Estimated cost: 10–200 €
- Estimated time: 0.3–1.5 h
- Component: regulator supply
- Component: fuse
- Component: relay
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012