Charge Air Cooler Coolant Temperature Sensor B Circuit High

Where it lives

For P2ACA, the sensor sits on the circuit this code reports. The description of P2ACA reports a fault at the sensor.

Check these first

• An open sensor B signal circuit reading as a constant high temperature
• A failed charge air cooler coolant temperature sensor B with high resistance
• A disconnected sensor B connector
• A sensor B signal wire broken inside the insulation

What to do next

1. Scan all modules and read charge air cooler coolant temperature sensor B
2. Inspect the sensor B connector and harness for a break or a loose fit
3. Test the sensor B signal wire for continuity from the sensor to the module
4. Measure sensor B resistance hot and cold against the charge air coolant range
5. Replace charge air cooler coolant temperature sensor B if the wiring is intact
6. Clear the code and retest

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