OBD-II code · Powertrain (generic)
P00E1 Charge Air Cooler Coolant Temperature Sensor A Circuit High
CAC coolant temp sensor A signal voltage above expected range. 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 P00E1?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySignal wire open
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Cac Coolant Temp Sensor A, Sensor Wiring
Related codes
- P2ACACharge Air Cooler Coolant Temperature Sensor B Circuit High
- P00DECharge Air Cooler Coolant Temperature Sensor A Circuit
- P00DFCharge Air Cooler Coolant Temperature Sensor A Circuit Range/Performance
- P00E0Charge Air Cooler Coolant Temperature Sensor A Circuit Low
- P00E2Charge Air Cooler Coolant Temperature Sensor A Intermittent/Erratic
- P00E3Exhaust Heat Exchanger Exhaust Bypass Valve A Stuck Open
- P00E4Exhaust Heat Exchanger Exhaust Bypass Valve A Stuck Closed
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.