OBD-II code · Powertrain (generic)
P00A3 Charge Air Cooler Temperature Sensor Circuit High Bank 2
Charge air cooler temperature sensor signal voltage on bank 2 above expected range. Typically open circuit or short to power.
Is it safe to drive with P00A3?
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
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Cac Temperature Sensor, Sensor Wiring
Related codes
- P007DCharge Air Cooler Temperature Sensor Circuit High Bank 1
- P00A0Charge Air Cooler Temperature Sensor Circuit Bank 2
- P00A1Charge Air Cooler Temperature Sensor Circuit Range/Performance Bank 2
- P00A2Charge Air Cooler Temperature Sensor Circuit Low Bank 2
- P00A4Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 2
- P00A5Intake Air Temperature Sensor 2 Circuit Bank 2
- P00A6Intake Air Temperature Sensor 2 Circuit Range/Performance Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.