Buick Encore P0156: O2 Sensor Circuit Malfunction (Bank 2 – Sensor 2)
P0156 is an OBDII trouble code that occurs in the Buick Encore. It is typically caused when the O2 Sensor voltage is not within its specified operating range. Bank two will be the side of the engine with cylinder 2 in the firing order. Sensor 2 is aft of the catalytic converter. … Read more