Powertrain
generic / SAE
P25F9
Turbocharger/Supercharger Bypass Valve C Control Circuit Low
Voltage on the third bypass valve control line is below the expected window. Usually a short to ground or a shorted solenoid coil.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / F9
Possible causes
- Control wire shorted to ground high
- Internal short in the solenoid coil medium
- Connector pins corroded - high contact resistance low
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–900 €
- Estimated time: 0.8–3 h
- Component: bypass valve c
- Component: bypass solenoid
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012