P1121 LEXUS Coolant Flow Control Valve Position Sensor Circuit Stuck

Possible causes

– Faulty Coolant Flow Control Valve Position Sensor
– Coolant Flow Control Valve Position Sensor harness is open or shorted
– Coolant Flow Control Valve Position Sensor circuit poor electrical connection

Tech description

For Non-Hybrid Lexus Vehicles P1121 = Accelerator Pedal Position Sensor Range/Performance Problem. See: P1121 Lexus

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)