I have a P0155 code on my 2000 Max that I read on my OBD Link device. My research shows that to be O2 sensor heater bank 2 sensor 1. When I look on my app to configure a gauge to watch I don't see an option for B2 S1. If my phone is not connected to my car there is an option for B2 S1. When I configure that choice I just get zeros. So, is it bad and the OBD doesn't even see it to give me the choice? Does anyone have an idea where I can get a list of the sensors that should show up on an OBD system? I am new at this, just got a OBDlink LX for Christmas and I was trying to get rid of an SES light. I am just using the software that came with it, maybe I should try some different software. Thanks for any help!

 

I use Car Gauge Pro. It shows all 4 O2 sensors and like 50 others that I have no idea what they are.

 

I am using the OBDlink LX also. I just leave it plugged in all the time. I'm using Torque Pro, the OBDlink app and Car Gauge Lite. Since my last smog check and O2 sensor replacement, I haven't messed with it, but on all these apps I can always see all 4 of my O2 sensors.

 

Thank you. I tried Torque and definitely think it is worth the $5. I found out that it shows what sensors are active for my vehicle. I just got my new O2 sensor yesterday and hope to replace it tomorrow. I am hoping it will get rid of my P0155.

 

Glad that helped.

You will have to clear your codes and then you will have to perform the emissions readiness tests to see if your problem has actually been solved.

The FSM has a section on how to do this. Maybe someone can chime in here and post the page or a link. If you're not in a hurry, regular driving for a while will actually be enough for the tests to complete. The torque app will show the progress of the readiness tests. Once they're all complete and you don't get a CEL, you're golden.

 

Well, bad news! I got out in the garage to change the O2 sensor and the whole thing twisted off with the first turn of the wrench. I guess now I am looking at an exhaust pipe repair.

 

UPDATE
I took the precat piece out and got the hole where the O2 sensor was fixed. Replaced both O2 sensors and put it back in. Cleared the codes. My SES light is off, but my OBD reader still shows no data for the Bank 2 pre cat sensor. Am I missing something? I appreciate any suggestions.