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P0131 Diagnostic Trouble Code Discussion for December 2008

Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift)


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Trouble Ticket Help Requests for DTC P0131
Help Request Posted
2002 Mazda Protege DX 2.0L Poor Idle Quality, Cuts out, MIL Lamp on VIN: JH1BJ22622
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Input (No Inversion). when i start the car the o2 readings will both drop very low. ie. sensor 1 at 0.035 sensor 2 at 0.100. i smoke tested it. fuel pressure is in range. monotored scan data, coolant and intake air temp are within range. thottle position sensor sweeps ok. mass air ...
December 05, 2008
1998 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZG5281W
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. VEHICLE HAS TOTAL OF 8 CODES SAME AS ABOVE PLUS PO507 IDLE CONTROL SYSTEM (RPM TOO HIGH )AND PO1404 EGR-2 POSITION ERROR/EGR CLOSED PERFORMANCE. O2 SENSOR LOOKS GOoD ON THE MODIS,TPS VOLTAGE IS .25V AT IDLE AND 3.3 AT WOT,WHEN I UNPLUG MAP SENSOR I GET .5V AN...
December 08, 2008
2002 Mazda Protege DX 2.0L Poor Idle Quality, Cuts out, MIL Lamp on VIN: JH1BJ22622
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Input (No Inversion). when i start the car the o2 readings will both drop very low. ie. sensor 1 at 0.035 sensor 2 at 0.100. i smoke tested it. fuel pressure is in range. monotored scan data, coolant and intake air temp are within range. thottle position sensor sweeps ok. mass air ...
December 05, 2008
1998 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZG5281W
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. VEHICLE HAS TOTAL OF 8 CODES SAME AS ABOVE PLUS PO507 IDLE CONTROL SYSTEM (RPM TOO HIGH )AND PO1404 EGR-2 POSITION ERROR/EGR CLOSED PERFORMANCE. O2 SENSOR LOOKS GOoD ON THE MODIS,TPS VOLTAGE IS .25V AT IDLE AND 3.3 AT WOT,WHEN I UNPLUG MAP SENSOR I GET .5V AN...
December 08, 2008