Code : P1031
Make : BUICK
Description : P1031 BUICK HO2S Heater Current Monitor Control Circuit Banks 1 and 2 Sensor 1
Possible causes :
– Faulty Heated Oxygen Sensor Bank 1 or 2
– Heated Oxygen Sensor Bank 1 or 2 harness is open or shorted
– Heated Oxygen Sensor Bank 1 or 2 circuit poor electrical connection
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.
