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O2 Sensor Wires


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Hi Guy's,

I have a Celica GT Jap Import does anybody know which wire's are which on a 4 wire O2 sensor, I have 2 black, 1 white,1 blue.

I need to replace my O2 sensor & I can get one but I have to wire it up to my existing plug socket.

The one I have been offered has the following wires,

1 signal (black)

1 12v supply (white)

2 earth (1 grey and 1 white)

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what year is your celica if its an st205 gt4 then i have an o2 sensor going spare

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