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light go on when cold out goes off when warm out

Vehicle: 1997ford f150 4.6

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Hi there

This code indicates a lean fuel mixture on bank 2. There are several possible causes for this code to appear. Here is some more info on the code.

1151 FORD - Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Lean Bank 2

Read more: https://www.autocodes.com/p1151_ford.html

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