Checked out the cel today and came up as P0136 (O2 Sensor B1 S2 Malf.) Im guessing its bank 1 sensor 2 which is the rear o2 sensor on the rear exhaust manifold? Let me know thanks a lot.

 

Its The O2sensor For The Rear, Near The Car. 95-96 Max Uses Different Rubber Groment, So Make Sure To Right Down The Vin Number And Give It To The Dealership So They Can Match It Up. 97 Maxs Have A Updated O2 Sensor Kit

 

You can buy this O2 sensor at any any parts store..I got mine for $115 (canadian)..Brand was NTK..part # is 24072...Dont bother going to the dealer...They'll just rip you off., since it's the same part with Nissan branding on it.