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P0031

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P0031 OBD-II Trouble Code: HO2S Heater Control Circuit Low (Bank 1 Sensor 1)
P0031 trouble code definition P0031 is the code for HO2S Heater Control Circuit Low (Bank 1 Sensor 1) What the P0031 code means P0031 code means for the engine to...

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Question
Getting a check Engine light and codes
Both of those codes are for oxygen sensor issues. Oxygen sensors needs to heat up before it gives good readings. In pre 1996 cars, the sensor would get heated up by the cars exhaust. This took about 2 minutes. Oxygen...
Question
Service Engine Soon light is on in 2003 Toyota Tacoma
Hello code P0031 is for an oxygen sensor Bank 1 Sensor 1 heater circuit malfunction. Electrical testing should be performed to verify that the oxygen sensor has a good heater, measuring the resistance of the heater. If the heater has...

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