P1116 – 2004_TOYOTA_PRIUS

Code : P1116
Make : 2004_TOYOTA_PRIUS
Description : P1116 2004 TOYOTA PRIUS Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
Possible causes :
– Coolant Heat Storage Tank
– Faulty Engine Coolant Temperature (ECT) sensor for CHS (Coolant Heat Storage)
– Low engine coolant level
– Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted
– Engine Coolant Temperature (ECT) sensor for HST
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.

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