O2 Sensor or Catalytic Converter?
Thread Starter
TECH Resident
iTrader: (4)
Joined: Jul 2006
Posts: 870
Likes: 0
From: Spring Hill, FL
O2 Sensor or Catalytic Converter? I am throwing the code P0137
Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)
This is the O2 sensor for the catalytic converter. I currently have 59k miles on the car and I got a Magnaflow high flow cat around 40k miles. It seems kind of weird if it is my high flow cat that is messing up. I haven't changed any of the O2 sensors yet. I don't want to change the O2 sensor for the catalytic converter if the code wont go away. I know that this O2 sensor is to just tell if the cat is functioning properly and serves no purpose otherwise.
With that said. How can I determine if its the high flow cat that's the problem or the O2 sensor? Thanks!!
Oxygen O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)
This is the O2 sensor for the catalytic converter. I currently have 59k miles on the car and I got a Magnaflow high flow cat around 40k miles. It seems kind of weird if it is my high flow cat that is messing up. I haven't changed any of the O2 sensors yet. I don't want to change the O2 sensor for the catalytic converter if the code wont go away. I know that this O2 sensor is to just tell if the cat is functioning properly and serves no purpose otherwise.
With that said. How can I determine if its the high flow cat that's the problem or the O2 sensor? Thanks!!
TECH Regular
Joined: Mar 2009
Posts: 420
Likes: 0
From: Ricerville
Definitely O2 sensor or something electrical in my opinion. From what I have heard, if the cat is bad, you will set either P0420 for the driver side or P0430 for the passenger side.
Also, if you have aftermarket high-flow cats, those can throw codes. But like LS6427 said, you can either run O2 sensor simulators (get them from one of the sponsors I think) or either tune out the tests for the code you are getting as well as P0420 and P0430, or have a tuner do it.
Also, if you have aftermarket high-flow cats, those can throw codes. But like LS6427 said, you can either run O2 sensor simulators (get them from one of the sponsors I think) or either tune out the tests for the code you are getting as well as P0420 and P0430, or have a tuner do it.
Thread Starter
TECH Resident
iTrader: (4)
Joined: Jul 2006
Posts: 870
Likes: 0
From: Spring Hill, FL
Definitely O2 sensor or something electrical in my opinion. From what I have heard, if the cat is bad, you will set either P0420 for the driver side or P0430 for the passenger side.
Also, if you have aftermarket high-flow cats, those can throw codes. But like LS6427 said, you can either run O2 sensor simulators (get them from one of the sponsors I think) or either tune out the tests for the code you are getting as well as P0420 and P0430, or have a tuner do it.
Also, if you have aftermarket high-flow cats, those can throw codes. But like LS6427 said, you can either run O2 sensor simulators (get them from one of the sponsors I think) or either tune out the tests for the code you are getting as well as P0420 and P0430, or have a tuner do it.
Yeah, I didn't think it could be the cat. Ill swap the O2's and see if the code is still there. Thanks!
Not sure if you have ever done this before, but you will need to use anti-seize compound on the sensors when you swap them. (New sensors come with this stuff pre-applied.) If you don't use it, they will fuse to the pipes and will never come back out again.
Thread Starter
TECH Resident
iTrader: (4)
Joined: Jul 2006
Posts: 870
Likes: 0
From: Spring Hill, FL
I also forgot to mention that the SES light will go on and off. It will sometimes go on for 100 miles and then be off for maybe 20 miles. Then it will come back.
I heard from some people that the O2 sensor could just be confused because its a high flow cat and not the stock one. What do you guys think? I wanted to mention in coming on/off because I'm sure thats an important detail. I just dont want to buy a new O2 sensor and I wasted the money and still get the code.
Any other thoughts?
I heard from some people that the O2 sensor could just be confused because its a high flow cat and not the stock one. What do you guys think? I wanted to mention in coming on/off because I'm sure thats an important detail. I just dont want to buy a new O2 sensor and I wasted the money and still get the code.
Any other thoughts?
Trending Topics
Thread Starter
TECH Resident
iTrader: (4)
Joined: Jul 2006
Posts: 870
Likes: 0
From: Spring Hill, FL
Any input on this? I am not sure if I should get an O2 sensor or an O2 simulator. Anybody have luck with the simulators before? I just want to be sure the code is gone.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
