P0032 - OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT HIGH (BANK 1 SENSOR 1)

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.

• Check Engine service light turns on.

When the P0032 OBDII code is set it can mean that:

• The heating element circuit of the Oxygen Sensor (O2) may have a short circuit.
• The heating element of the Oxygen Sensor (O2) may be defective.
• Perhaps the cables or connectors that lead to the O2 (Oxygen Sensor) or the relay, are worn or in bad condition.

To correct a DTC P0032 you can do the following:

• Check the cables and connectors that lead to the Oxygen Sensor (O2), looking for any of these components that are worn or rubbed. Rapara or change if you find inconsistency in one of these.
• In case your vehicle is equipped with a heater relay and a fuse, you can check with a digital meter that there are 12 volts in the power supply of the heater element circuit. To do this, disconnect the Oxygen Sensor and verify that there is sufficient continuity in the earth circuit at the wiring connector. Also verify that the resistance and tension of the wiring is as indicated in the manufacturer's specifications. Make the relevant repairs if these values ​​are out of specifications.
• You can replace the Oxygen Sensor (O2) number 2 located in bank number 1.