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Re: '01 Sentra GXE 1.8 P0154 issue
Posted to Technical Discussion Forum on 4/17/2012 12 Replies

Hi Steve

First off that code is for B2S1 which would be cylinders #2 and #3. Unplug that sensor and see if the voltage drops. If it does it is a bad o2 sensor. If it does not you more than likely have a bad PCM. HTH

Paddy Login to read more.

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