Error Code P0137: O2 Sensor Circuit Low Voltage Bank 1 Sensor 2

[Bill M]

This is on a 2017 Nissan Pathfinder SL with 50,500 miles. Just started and wonder what someone can tell me about it. Is it difficult to change out? I have searched YouTube and there isn't much help on this year model for some reason. What does a sensor cost?


Thanks

[Johnny Dangerr]

I will add: kind of early to lose a o2 sensor. If it's bad change all of them instead of putting your vehicle in the shop 3 more times. Pay once - cry once. Use Nissan only for parts...

[Bill M]

I will add: kind of early to lose a o2 sensor. If it's bad change all of them instead of putting your vehicle in the shop 3 more times. Pay once - cry once. Use Nissan only for parts...

So you are saying this is not a DYI job?

[Twist]

I’m not personally familiar with a Nissan set up, but the sensors I’ve dealt with have been mounted on the exhaust piping, usually beginning behind the manifold as I recall. Biggest issue I ever had changing one was the sensor being rust-welded in. Get a good penetrating oil and let it soak in for a few hours, shouldn’t be much to removal after that.

That said, I had one that drove me bat crap crazy on a 2000 S10 ZR2 I had several years ago. Code came back after changing the sensor, swapped the sensor with the one on the other side (I believe it only had one per side) and the exact same code came back again.

After a lot of research, and beer, turned out the setup on that truck had fuses and one had blown. That ended up being my problem the entire time.

I’m not saying that’s the case here but it’s definitely something to look into.

[kerrbow]

I have a 2017 Titan and mine threw the same code last week. I was at the lease and drove several hours at low speed on very bumpy terrain. Put the code reader on it and then cleared it and it has been ok ever since.

[Bill M]

I’m not personally familiar with a Nissan set up, but the sensors I’ve dealt with have been mounted on the exhaust piping, usually beginning behind the manifold as I recall. Biggest issue I ever had changing one was the sensor being rust-welded in. Get a good penetrating oil and let it soak in for a few hours, shouldn’t be much to removal after that.

That said, I had one that drove me bat crap crazy on a 2000 S10 ZR2 I had several years ago. Code came back after changing the sensor, swapped the sensor with the one on the other side (I believe it only had one per side) and the exact same code came back again.

After a lot of research, and beer, turned out the setup on that truck had fuses and one had blown. That ended up being my problem the entire time.

I’m not saying that’s the case here but it’s definitely something to look into.

Thanks for that. The problem I'm having is I can't find much info on this model which I find very odd.

[Bill M]

I have a 2017 Titan and mine threw the same code last week. I was at the lease and drove several hours at low speed on very bumpy terrain. Put the code reader on it and then cleared it and it has been ok ever since.

I have ordered a code reader since we won't be trading this one off. May just wait as it isn't affecting the performance or fuel economy.

[Bill M]

Any more comments? I'm discovering that this is not a DYI job for me. Proud of these parts.

[WItoTX]

How long has it been on? One tank of fuel or multiple? It could be you got bad fuel somewhere. Bucees fuel has given me grief, but usually a fill from a name brand station does the trick.

50k seems really low to have an O2 sensor go out. Is it possible the harness wiggled loose?

Here is a link to the wiring diagram. Based on where it shows Bank 1, sensor 2, I would definitely take it in. That seems like a knuckle buster!

https://f01.justanswer.com/NISSAN_MA...af_sensors.PNG

[tx_basser]

If you can get ot them you can change them.. just buy the O2 sensor socket, a torch handy, and some grunt and you can bust them loose.

[Walker]

There is usually (99%) of the time nothing wrong with your vehicle. The sensor is bad so don't worry about it. The sensor doesn't effect the computer running the engine.

[Goldeneagle]

There is one wiring connector and the sensor unscrews. Sensor 1 is up by the exhaust manifold and sensor 2 is downstream of the converter.

[Bill M]

Thanks for the additional input.

How long has it been on? One tank of fuel or multiple? It could be you got bad fuel somewhere. Bucees fuel has given me grief, but usually a fill from a name brand station does the trick.

50k seems really low to have an O2 sensor go out. Is it possible the harness wiggled loose?

Here is a link to the wiring diagram. Based on where it shows Bank 1, sensor 2, I would definitely take it in. That seems like a knuckle buster!

https://f01.justanswer.com/NISSAN_MA...af_sensors.PNG

I wondered about this. Maybe I'll add some Seafoam and fill up at Chevron, Shell or Exxon.

[Humper]

Check wiring would be my first thought with lower mileage. Rodents love to chew wires. Also, is your pathfinder getting the same gas mileage As before the code?

[Bill M]

Check wiring would be my first thought with lower mileage. Rodents love to chew wires. Also, is your pathfinder getting the same gas mileage As before the code?

Yes, we have been down the rodent road before. I plan to check that out. Gas mileage is the same and very good. No sluggishness or hesitation in the performance either.