Chassis
generic / SAE
P25C6
Brake Booster Temperature Sensor A Circuit Low
The booster temperature signal is below the lower diagnostic threshold. Typical causes are a shorted sensor element or a short to ground in the harness.
SystemChassis
Typegeneric / SAE
GroupP2
Range / number5 / C6
Possible causes
- Internal short in the sensor element high
- Sensor signal wire shorted to ground medium
- Connector pins corroded - high contact resistance 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: hard
- DIY: shop recommended
- Estimated cost: 200–1200 €
- Estimated time: 1–3.5 h
- Component: electric brake booster
- Component: temperature sensor
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012