The diagnostic code P0032 OBD2 refers to the Oxygen Sensor (O2) which is located in bank number 1, on the front of the catalytic converter. Taking into account that there are two oxygen sensors, this is the first or sensor number 1. In some vehicles this sensor is referred to as an air / fuel ratio sensor, as it is.
Its function is to detect the amount of oxygen present in the exhaust gas and compare it with the air outside. Then the PCM (Powertrain Control Module) taking into account this reading adjusts the air / fuel ratio that enters the motor.
The function of this sensor can be affected when the temperature of the exhaust gases is low, so it is equipped with a heating element, which is activated and in this way the readings obtained from the Oxygen Sensor (O2) will be better. This DTC code is established when the heating element circuit resistance of the Oxygen Sensor (O2) is higher than the expected level, in some cases it must be at 10 A.