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4agze ae92 Levin 1988 I have a flash code for O2 sensor. No sensor is installed in aftermarket exhaust. Supposed to have 4 wire plug cant find it! Only one I found is a round single black wire gray plug on left side. Will post pic later of plug.
Ok thanks for the reply. If someone could upload a pic of the plug and wires coming out it would be helpful Im going to try and trace the OX wire from the diag port and see where It ends up. Im working off an MR2 diagram is it the same as ae92 for wire colors and routing?
For anyone wondering how this turned out, I removed all the tape and wire loom and took apart my diag port to follow my "OX" black wire to my oxygen sensor. On my harness the black wire behind the OX terminal ends up going into a thick gray wire into the loom and back to a black wire. This wire looks like it has been replaced at some time so it may be different for you. The black wire ends up into a single terminal round plug located by the thermostat on the left side of the engine. Not sure if it should have a single wire Oxygen sensor, but it does now!
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