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P0131 Diagnostic Trouble Code Discussion for April 2006

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
1999 Chevrolet K1500 Suburban 5.7L lack of power VIN: 3GNFK16RXG
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. this sububan acts like its running out of fuel. on the highway the o2 sensors go lean to 9 to 24 milli volts. going about 75 mph tps show 100 percent injector pulse width on the scanner show 11.5 ms, air flow meter shows 89 grams per second map sensor show 3.4...
April 06, 2006
2002 Chevrolet Blazer LS 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GNCT18W72
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. Blazer came in with check engine light was off and customer stated light comes on at times and sometimes it idle funny.Test drove blazer and is running okay.Checked codes and got po131,po171,po300.Check freeze frame and got freeze frame for po171.The fuel trim...
April 10, 2006
2000 Chevrolet Venture 3.4L MIL Lamp on VIN: 1GNDX03E1Y
P0131: Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage. Well it came in for engine light on, runs fine. Found two codes 131 137 both sensors low voltage. Test drove after clearing the codes saw open loop not only at wide open throttle but also at closed throttle sometimes. At one point we went to open loop and the ...
April 28, 2006