Are the all 02 sensors the same type? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 04-21-2014
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Are the all 02 sensors the same type?

So..... The Bank 1 Sensor 2 failed Inspection today. My question is: Are all the O2 sensors the same type? What I mean is, Is there a specific type for each bank? The numbers on all the O2 sensors are the same, it looks to me. It's just a matter of replacing the right one, correct?
I had SEVERAL codes come up when I had my ranger inspected. The were P0756, P1443, P0136, P0141, P1400, P0171, & P0174....WOW! I have fixed all and the only code that shows now is the P0141. I just want to make sure that I get the right sensor. I DON'T TRUST THE "MECHANICS"...LOL...AT THE AUTO PARTS STORES TO BE ANY HELP AS THEY USUALLY COST ME MONEY AND THE PROBLEM STILL PERSISTS.
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Old 04-21-2014
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O2 Sensor 2 is the sensor after the cat converter, if you don't have Dual exhaust then it is the only sensor 2.

Bank 1 sensor 1 is on the passenger side exhaust of V6 or V8
Bank 2 sensor 1 is on the drivers side exhaust of V6 or V8

Bank 1 sensor 2 is after the cat converter on single exhaust, passenger cat on dual exhaust
Bank 2 sensor 2 is after the cat converter only found on Dual exhaust
Yes, they are all the same sensor type, they can be swapped around.

P0141 is an O2 heater circuit issue so check the wiring first, sensor 2's rarely fail since they get cleaner exhaust being after the cat converter.
They also don't effect engine operation, they are there to check if cat converter is working.

One fuse powers all the O2 heaters, so fuse is OK if P0141 is the only code, the sensor 2 wires can get melted so check carefully, there will be 4 wires at the O2, one should have 12volts with Key on Engine off, if one wire does then replace O2 sensor, if not then it is a wiring issue not a sensor issue.

Last edited by RonD; 04-21-2014 at 07:51 PM.
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Old 04-22-2014
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Thanks Again RonD!

Last edited by BL00DPIG; 04-22-2014 at 05:24 AM.
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