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What is part number for this error?

Vehicle: 2007, Ford, Escape, 2.3l

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HI there

This code is for the front O2 sensor on bank 1. This is normally resolved by replacing the front O2 sensor.

P2251 FORD - O2 Sensor Negative Current Control Circuit Open Bank 1 Sensor 1

Read more: https://www.autocodes.com/p2251_ford.html

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