P00A2 — Charge Air Cooler Temperature Sensor Circuit Low Bank 2

The charge-air-cooler temperature sensor on bank 2 reports an electrically low input. This describes a measurement or signal condition, not proof that the air cooler itself has failed. Check installed sensor channels and interpret the readings using the exact vehicle procedure; electrical high/low is not necessarily physical temperature high/low.

Affected system: Charge-air-cooler temperature sensing

Symptoms

• Warning light may illuminate
• Related system function may be impaired
• Vehicle-specific symptoms vary

Possible causes

• Implausible sensor or switch signal, poor ground, connector corrosion, or wiring damage
• Related wiring, connector, power or ground fault
• Vehicle-specific mechanical or control issue

What to check

• Record stored and pending codes and freeze-frame data
• Compare the named sensor or switch signal with actual operating conditions; inspect the connector, reference supply, ground and harness.
• Confirm measured values against the vehicle service information
• Retest under the conditions that set the code
• Compare the named sensor or switch signal with actual operating conditions; inspect the connector, reference supply, ground and harness.
• Repair the verified cause and confirm the code does not return

Also written as: P00A2-00, P00A200, PO0A2 (some scan tools add the fault-type byte, e.g. -00).