help me identify the 4 wire rear o2 sensor [Archive] - SR20 Forum
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: help me identify the 4 wire rear o2 sensor

SER_98
04-18-2006, 03:56 PM
My rear o2 sensor has 4 wire.1 black, 1 white and 2 grey. ANyone can help me with one is the sending signal and which one is the return signal?
SER_98
04-22-2006, 08:00 AM
HELPPPPPPPPPPPPPPPPP
TurboTank
04-22-2006, 09:31 AM
i belive the the 2 gray are the heater wires. the black is groung and white signal
SER_98
04-22-2006, 03:45 PM
aright thanks :)
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