P0054 Ford -

Question

location of ho2s o2 sensor on 2006 ford focus

Answer 1

P0054 H02S Bank 1 sensor 1

There are 2 02 sensor the one before the catalytic is the upstream or what is known as the engine management sensor, this is known as sensor 1. The one after the catalytic is the catalytic monitor sensor this is the downstream sensor. P0054 is when the heater sensor of the 02 is open ,sort in the harness, or a damage 02 sensor of sensor 1.