On my 2003 Ford Focus what causes the engine code p0054?

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Carguy1 · Answer 1 · 2018-01-04T17:01:32+0000

HI there

Usually this is the result of a bad O2 sensor. The heater inside fails and causes this code to appear.

P0054 FORD - HO2S Heater Resistance Bank 1 Sensor 2

Read more: https://www.autocodes.com/p0054_ford.html