OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P00DF?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor reading drifted
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cac Coolant Temp Sensor A
Related codes
- P00DCAmbient Air Temperature Sensor Circuit B High
- P00DDAmbient Air Temperature Sensor Circuit B Intermittent/Erratic
- P00DECharge Air Cooler Coolant Temperature Sensor A Circuit
- P00E0Charge Air Cooler Coolant Temperature Sensor A Circuit Low
- P00E1Charge Air Cooler Coolant Temperature Sensor A Circuit High
- P00E2Charge Air Cooler Coolant Temperature Sensor A Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.