Powertrain
generic / SAE
P25F2
Turbocharger/Supercharger Boost Sensor C Circuit
A third boost pressure sensor (C) used on twin-stage or sequential boost systems returns no usable signal. Without it, boost control of the third stage runs open-loop or is disabled.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / F2
Possible causes
- Open sensor element or broken signal wire high
- Corroded connector at sensor pigtail medium
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.5–2 h
- Component: boost pressure sensor c
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012