GMC P1163 Heated Oxygen Sensor 1 Lean Shift Monitoring Bank 2

Possible causes

– Front Heated Oxygen Sensor Bank 2
– Front Heated oxygen sensor 1 heater
– Fuel pressure
– Injectors
– Intake air leaks

Tech description

If there are no intake air leaks, the most likely cause of the P1163 GM code is the front O2 sensor bank 2.

When is the obd code mean?

The maximum and minimum voltage from the sensor are not reached to the specified voltages.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

P1163 GM OBD Code Description

The heated oxygen sensor 1 is placed into the front tube. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the ECM. The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

P1163 GM Information for specific makes

P1163 GM ACURA< GM/span>
P1163 GM BUICK GM
P1163 GM CADIL GMLAC
P1163 GM CHEVR GMOLET
P1163 GM GMC
P1163 GM HONDA
P1163 GM INFINITI
P1163 GM NISSAN