Powertrain
generic / SAE
P25F3
Turbocharger/Supercharger Boost Sensor C Circuit Range/Performance
The third boost pressure sensor reading is implausible compared with manifold pressure or commanded boost. Either drift, leak in the sensing line, or contamination on the sensor diaphragm.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / F3
Possible causes
- Sensor drift after thermal aging medium
- Sensing hose blocked by oil residue medium
- Sensor element aged beyond calibration window low
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: sensing line
- MIL / check engine light
Sources
References
sae:J2012