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P1131 Diagnostic Trouble Code Discussion for March 2008

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
1996 Ford F-150 Eddie Bauer 4.9L MIL Lamp on VIN: 1FTEF14YXT
P1131: bank 1 sensor 1 lean. Hello All, Looking for some input here. This truck has an MIL on with the 5 codes I listed below. While looking at data with the NGS the B2 fuel trim will max and sit there a little bit then go negative. After that B2 will work it's way up to +15 or 16 and bo...
March 10, 2008
1996 Ford F-150 Eddie Bauer 4.9L MIL Lamp on VIN: 1FTEF14YXT
P1131: bank 1 sensor 1 lean. Hello All, Looking for some input here. This truck has an MIL on with the 5 codes I listed below. While looking at data with the NGS the B2 fuel trim will max and sit there a little bit then go negative. After that B2 will work it's way up to +15 or 16 and bo...
March 10, 2008