O2 sensors bank 2 sensor one

Asked by Apr 05, 2016 at 06:41 PM about the 2006 Mitsubishi Eclipse GT

Question type: Maintenance & Repair

I trying to change the o2 sensor for bank to sensor
1 but not sure which one it is pls help a pic word
reallyhelp

9 Answers

11,725

Bank 2 (sensor 1) will be upstream meaning the sensor closest to the engine on that bank... sensor 2 will always be behind / after the catalytic converter.

2 out of 2 people think this is helpful.
20

I have none after cat I took interior/consol out cant find any wire hook-up [all I have now is 2 one on each manifold ]

11,725

Here is where bank 2 sensor 1 is located. Sensor 1 is located upstream top of the exhaust manifold sensor 2 is after the pre-cat the photos not exactly your vehicle but very similar. NO, wires inside the car. The harnesses and connectors are under the hood.

2 out of 2 people think this is helpful.
20

thanks that's what and where I have on a o2 eclipse took motor out of 2000 put in 02 the 2000 had 3 [2 before and 1 after cat] total that's what made me scratch my head thanks again

1 out of 1 people think this is helpful.
20

1 more question oil indicator light is on even with wire unhooked/unhooked ecm plug under console stayed on/only goes out when dash plug unhooked [I tried 3 diff clusters]

20

wat color is wire at plug behind cluster so I can run new wire

20

didn't unhook ecm unhooked connector plug beside ecm

11,725

Most likely it is your SENDING UNIT. If your light comes on due to low pressure, it is usually way too late. They come on at around 5 psi, and at that low pressure your engine would be knocking. If you can, check the pressure with a manual gauge. If its good, go ahead and change out the sending unit. Regards

20

replaced unit no difference- 25lbs idle 40 lbs 2000 rpms- like I said with wire UNHOOKED lite is still on -single wire unit so to me that means wire is grounded some where [02 eclipse]

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