Charge Air Cooler Coolant Temperature Sensor B Circuit

Where it lives

For P2AC7, the sensor sits on the circuit this code reports. The description of P2AC7 reports a fault at the sensor.

Check these first

• A failed charge air cooler coolant temperature sensor B
• An open or short in the sensor B wiring
• A corroded sensor B connector exposed to coolant
• The sensor B unplugged during service

What to do next

1. Scan all modules and read the charge air cooler coolant temperature sensor B
2. Inspect the sensor B connector for corrosion or coolant residue
3. Test the sensor B circuit for open and short faults
4. Compare sensor B to the charge air coolant temperature sensor A reading
5. Replace charge air cooler coolant temperature sensor B if the circuit is sound
6. Clear the code and retest

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