I am getting the following codes. P1041 and P0138 on my 99 TJ 6.0. Both are related to the rear o2. Jeeps runs fine and I see a ton of threads on this. I replaced the cat and used a Walker rear o2. No plans on removing the cat and I dont have emissions testing. How can I turn off the light? Try another rear sensor? Any resistor mods to trick the computer? Tuner? I understand it could be wiring..the connection looks good but did trace it all the way up to the harness.
Rear O2 Light
- Thread starter kjdad
- Start date
You need HPTuners (or someone with access to it) to disable the rear O2 sensor check engine codes.
Monitor live ODB data. Check the voltages on the rear O2 sensor. Should range below.9v.
My 97 the rear went out. I tried a Walker and it was dead on arrival. Tried a new NGK. Same high voltage as the original. Tried a used NGK out of a 2000 Sahara and it's been perfect ever since.
Torque Lite is a free app and a $30 Bluetooth ODB dongle will do the trick.
-Mac
My 97 the rear went out. I tried a Walker and it was dead on arrival. Tried a new NGK. Same high voltage as the original. Tried a used NGK out of a 2000 Sahara and it's been perfect ever since.
Torque Lite is a free app and a $30 Bluetooth ODB dongle will do the trick.
-Mac
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