Powertrain
generic / SAE
P00A2
Charge Air Cooler Temperature Sensor Circuit Low Bank 2
Charge air cooler temperature sensor signal voltage on bank 2 below expected range. Typically a short to ground. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number– / A2
Possible causes
- Signal wire shorted to ground high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–350 €
- Estimated time: 0.5–2 h
- Component: cac temperature sensor
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012