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P1131 Diagnostic Trouble Code Discussion for February 2010

Heated Oxygen Sensor (Bank 1 Sensor 1) Indicates A/F Ratio Too Lean


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Trouble Ticket Help Requests for DTC P1131
Help Request Posted
2001 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZWFT61L11
P1131: Lack of H20 - B1 S1 switch indicates lean. ... possible., but codes stored previous to coming into our shop were gone due to a dead battery. This cougar came in with a misfire. Found an obvious upper plenum gasket leak. Removed the plenum and found the gasket melted at cyl. #3 and the IMRC flapper plat...
February 05, 2010
2000 Ford Taurus SE 2-Valve 3.0L Surge VIN: 1FAFP5527Y
P1131: ho2s11 indicates lean. i got the car from a other shop were most of the parts were replaced. i found the wrong plugs were installed and the wrong gap was set, there was also a cracked spark plug. i installed the correct plugs with the correct gap. i also found the cracked pcv hose a...
February 13, 2010
2000 Ford Taurus SE 2-Valve 3.0L Surge VIN: 1FAFP5527Y
P1131: ho2s11 indicates lean. i got the car from a other shop were most of the parts were replaced. i found the wrong plugs were installed and the wrong gap was set, there was also a cracked spark plug. i installed the correct plugs with the correct gap. i also found the cracked pcv hose a...
February 18, 2010
2001 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZWFT61L11
P1131: Lack of H20 - B1 S1 switch indicates lean. ... possible., but codes stored previous to coming into our shop were gone due to a dead battery. This cougar came in with a misfire. Found an obvious upper plenum gasket leak. Removed the plenum and found the gasket melted at cyl. #3 and the IMRC flapper plat...
February 05, 2010
2000 Ford Taurus SE 2-Valve 3.0L Surge VIN: 1FAFP5527Y
P1131: ho2s11 indicates lean. i got the car from a other shop were most of the parts were replaced. i found the wrong plugs were installed and the wrong gap was set, there was also a cracked spark plug. i installed the correct plugs with the correct gap. i also found the cracked pcv hose a...
February 13, 2010
2000 Ford Taurus SE 2-Valve 3.0L Surge VIN: 1FAFP5527Y
P1131: ho2s11 indicates lean. i got the car from a other shop were most of the parts were replaced. i found the wrong plugs were installed and the wrong gap was set, there was also a cracked spark plug. i installed the correct plugs with the correct gap. i also found the cracked pcv hose a...
February 18, 2010