P25FA — Turbocharger/Supercharger Bypass Valve C Control Circuit High
Voltage on the third bypass valve control line is above the expected window. Typical causes are a short to battery or an open solenoid coil.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Bypass valve c
- Bypass solenoid
- Wiring harness
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- Control wire shorted to a B+ supply
- Open solenoid coil
- Connector pins corroded - high contact resistance
Possible symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.