Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 2
Intermittent dropouts or noise on the charge air cooler temperature sensor signal on bank 2. 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.
Affected components
- Cac temperature sensor
- Sensor wiring
Common causes
- High likelihood: Connector loose or corroded
- Low likelihood: Connector with intermittent contact under vibration
- Low likelihood: Harness routed against vibrating component
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.