PLX Wideband Wiring

This app note outlines the procedures for direct replacement of your vehicle's stock narrowband oxygen sensor with the PLX M-Series wideband oxygen sensor while maintaining ECU narrowband closed loop operation. This setup is ideal if you don't want to weld an additional sensor bung on to your down pipe and if you desire to utilize the simulated narrowband output (gray wire) from the M-Series controller to maintain "like stock" ECU operation.

Compatibility?

Not all vehicles are equipped with a 0-1V narrowband oxygen sensor. You must first determine if your stock oxygen sensor outputs 0-1V and conforms to the following voltage characteristic. Otherwise, this appnote does not apply to your setup.

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Typically, if your stock sensor is a 4-wire, the outputs should match, and your setup will be compatible (except for the RSX and Civic SI).

Calibration Information