P05FC
Cold Start Fuel Pressure Performance Bank 2
During cold-start the ECU runs an elevated rail pressure on direct-injection systems for better cold spray atomisation. The pressure target on bank 2 is not reached within the calibrated time window - typical for a high-pressure pump that loses output when cold or a pressure regulator with cold-stickiness.
During cold-start the ECU runs an elevated rail pressure on direct-injection systems for better cold spray atomisation. The pressure target on bank 2 is not reached within the calibrated time window - typical for a high-pressure pump that loses output when cold or a pressure regulator with cold-stickiness.
Common causes
- high
HP pump output low when cold
One of the most commonly reported causes for this code — check this first.
Typical part cost: $330-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P05FC mean?
P05FC means "Cold Start Fuel Pressure Performance Bank 2". It is a generic OBD-II code that points to a fault in the vehicle speed, idle control, auxiliary inputs.
What are the most common causes of P05FC?
hp pump output low when cold — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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