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P0031 Diagnostic Trouble Code Discussion for March 2010

Air Fuel Sensor (Bank 1 Sensor 1) Heater Control Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0031
Help Request Posted
2006 Dodge Dakota SLT 4.7L MIL Lamp on VIN: 1D7HW48NX6
P0031: Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Low Voltage. dtc will clear with sensor disconnected. checked controll circuits all 4 o2 sensor heater controll circuits for short to ground all ok tested heater no heater controll from computer will run heater .5 sec then voltage drops to 0v .fail safe? with 02 sensor ins...
March 17, 2010
2003 Toyota Camry LE 2.4L MIL Lamp on VIN: 4T1BE32K63
P0031: Air Fuel Ratio Sensor (Bank 1 Sensor 1) Heater Circuit Low Input. Vehicle sets code P0031, O2 heater circuit high. California calibration/ULEV. (A/F ratio sensor). Tested by trouble tree provided to MOD by Toyota. All tests good except heater element resistance measured at ~3 OHMS. Have tried three A/F (including OEM) senso...
March 19, 2010