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P0131 Diagnostic Trouble Code Discussion for January 2010

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
2006 Volkswagen Jetta TDI 1.9L Excessive Emissions, Hesitation, MIL Lamp on VIN: 3VWRT71K56
P0131: b1s1 oxygen sensor low voltage. This little VW is kickin our tail. Customer brought us this car with a lack of power, black smoke, stalling and a check engine light on. We have a fair amount of exsperiance with the older TDI engines but not a lot with the internal injector style (BRM engine ...
January 20, 2010
1996 Jeep Cherokee SE 4.0L Excessive Emissions, MIL Lamp on VIN: 1J4FJ28SXT
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Voltage Low. Vehicle brought into shop with check engine light on , found o2 sensor no voltage. replaced o2 sensor everything worked fine for about 15 minutes. o2 sensor voltage with koeo reads 0.00 volts, if you watch scan data for about 5 minutes voltage will eventuall...
January 25, 2010
2000 GMC 3500HD 7.4L Misfire VIN: 1GDKC34J5Y
Engine idles fine and will rev fine if you give it just a little throttle. Try to give it a heavy throttle and the engine starts missing, if the throttle is held steady at any RPM the engine runs smooth with no miss but as soon as you try to give it some throt...
January 27, 2010