OBD-II Trouble Code Description for P0132 GMC

O2 Sensor Circuit High Voltage

What does this mean?

OBD2 Code P0132 GM definition:
This involves the front oxygen sensor on Bank 1. This code indicates that the heated oxygen sensor reading is too high. In the case of Ford vehicles, that indicates the voltage at the sensor is over 1.5 volts. Other vehicles may be similar.

Symptoms

Possible sumptoms of OBD code P0132 GM
You will likely not notice any drivability problems.

Causes

Possible causes of OBD code P0132 GM
A code P0132 GM may mean that one or more of the following has happened: The oxygen sensor heater circuit is shorted out The wiring to the sensor is broken / frayed (less likely)

Possible Solutions

The simplest thing to do is to reset the code and see if it comes back. If the code comes back, the problem is more than likely the front Bank 1 oxygen sensor. You will likely wind up replacing it but you should also consider these possible solutions: Check for wiring problems (shorted, frayed wires) Check the voltage of the oxygen sensor