P1166 – INFINITI

Code : P1166
Make : INFINITI
Description : P1166 INFINITI Heated Oxygen Sensor 2 Minimum Voltage Monitoring Bank 2
Possible causes :
– Faulty heated oxygen (O2) sensor 2 (rear)
– Intake air leaks
– Heated oxygen (O2) sensor 2 (rear) harness is open or shorted
– Heated oxygen (O2) sensor 2 (rear) circuit poor electrical connection
– Inappropriate fuel pressure
– Faulty fuel injectors
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.

Leave a Comment

Your email address will not be published. Required fields are marked *