How do I fix code P0031?
How to Diagnose and Repair Code P0031:
- If no voltage is registered, check the fuse; if the fuse is good, consider repairing short/open in heater circuit wiring.
- If low voltage is measured, check for high resistance in the wiring.
- If the voltmeter registers 12 volts, consider replacing the heated oxygen sensor.
What is P0031 diagnostic code?
If your OBD-II scanner indicates an error code P0031, this means that you have an issue with your O2 sensor number one. For many vehicles, this is also known as an air/fuel ratio sensor.
What is HO2S heater control circuit low?
Diagnostic Trouble Code (DTC) P0037 stands for “Heated Oxygen Sensor (HO2S) Heater Control Circuit Low (Bank 1, Sensor 2).” It refers to a malfunction in the heating element of the downstream oxygen sensor behind the catalytic converter.
Which oxygen sensor is heated?
OBD II equipped vehicles use heated oxygen sensors. Heated oxygen sensors have an internal heater circuit that brings the sensor up to operating temperature more quickly than an unheated sensor.
What is O2 sensor heater malfunction?
What Does the Code P0141 Mean? DTC P0141 stands for “Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2).” It indicates that there’s a problem with the heater circuit of engine bank 1’s downstream O2 sensor. Your car’s PCM tests the oxygen sensors’ heater circuits for integrity.
Where are heated oxygen sensors located?
The exhaust system has a Heated Oxygen Sensor in front of it. It is part of the Oxygen Sensor Heater. Behind the cylinder head is where the Heated Oxygen Sensor is located.
Where is the O2 sensor heater?
Bank 1 Sensor 2 is the oxygen (O2) sensor that’s in the middle of the catalytic converter or right behind the front catalytic converter (the converter that’s closest to the engine).
Why does an O2 sensor have a heater?
The heater will bring the sensor up to operating temperature within 20 to 60 seconds depending on the sensor, and also keep the oxygen sensor hot even when the engine is idling for a long period of time.