What is that plug under the exhaust manifold? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

FortuneKouki420 · 11-22-2011, 03:17 PM

My ECU is reading a rear o2 sensor circuit malfunction and I can't find the rear o2 sensor on my cat. My car is 95, ODB2 and I initially thought it was ODB1 so I changed the front o2 sensor but the engine light came back on. Can someone tell me what that plug is? I checked the FSM but without success.

(burrowed this picture)

I was at an autobody at first and the guy told me that plug is the rear o2 sensor.. I think he's bullshitting.. because the rear o2 should be right there but I can't find the slot after my cat! WTF. I can't find the rear o2 wire either. Thanks.

11-22-2011, 03:17 PM	#1
FortuneKouki420 Join Date: Jan 2009 Location: Davis, CA Posts: 17 Trader Rating: (1) Feedback Score: 1 reviews	What is that plug under the exhaust manifold? My ECU is reading a rear o2 sensor circuit malfunction and I can't find the rear o2 sensor on my cat. My car is 95, ODB2 and I initially thought it was ODB1 so I changed the front o2 sensor but the engine light came back on. Can someone tell me what that plug is? I checked the FSM but without success. (burrowed this picture) I was at an autobody at first and the guy told me that plug is the rear o2 sensor.. I think he's bullshitting.. because the rear o2 should be right there but I can't find the slot after my cat! WTF. I can't find the rear o2 wire either. Thanks.