P2AA9 Engine Coolant Bypass Valve B Position Sensor Circuit Low

Engine Coolant Bypass Valve B Position Sensor Circuit Low. The control module detected that the signal in the Engine Coolant Bypass Valve B Position circuit stayed below the expected operating range.

P2AA9 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.