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I have the P1151 trouble code on my 2002 Ford F150 V6. What is the problem?

Vehicle: 2002 Ford F150 V6

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Usually, the problem is the upstream (front) oxygen sensor (O2) bank 2.

P1151 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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