P1147 – All makes

Code : P1147
Make : All makes
Description : P1147 Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1
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.

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