Code : P1121
Make : 2008_TOYOTA_PRIUS
Description : P1121 2008 TOYOTA PRIUS Coolant Flow Control Valve Position Sensor Circuit Stuck
Possible causes :
– Coolant Flow Control Valve (Stuck or Clogged Cooling System)
– 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 conn
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.
