Home › Toyota › 2006 › Prius › Repair and Diagnosis › Engine Performance › Engine Control System (1NZ-FXE) › SFI System › DTC P1120 Coolant Flow Control Valve Position Sensor Circuit; DTC P1122 Coolant Flow Control Valve Position Sensor Circuit Low; DTC P1123 Coolant Flow Control Valve Position Sensor Circuit High › Component Operating Range