Powertrain
generic / SAE
P00DF
Charge Air Cooler Coolant Temperature Sensor A Circuit Range/Performance
CAC coolant temp sensor A reading implausible. The engine coolant temperature sensor feeds warm-up enrichment, fan control and closed-loop entry — a stuck-cold reading keeps the engine in open loop and rich forever.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / DF
Possible causes
- Sensor reading drifted high
- Sensor element aged beyond calibration window low
- Sensor mounting loose - signal damping low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–350 €
- Estimated time: 0.5–2 h
- Component: cac coolant temp sensor a
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012