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I just replaced O2 sensors that were maybe 7 months old with 4 new NTK sensors and I have check the grounds and they seem to be tight and no corrosion. Local mechanic said there could be a fuse since the scanner says that it’s all four O2 sensor heaters, so was wondering if anyone had the same...

Does anyone know if there is a fuse that controls the O2 sensor heaters on a 2011 3.8 L Jeep Wrangler JK. When I use the scanner, it said that all four O2 sensor heaters are the issue and I had just replaced all four O2 sensors less than a month ago.

Some more inexpensive locks will have a 4 digit number stamped on the face of the lock, that is a code key and if it does you may be able to take that to a good locksmith and he may be able to cut a key, worth a try.

I’ll give it a try.

Yes and they are clean, tight and in good condition.

What about if I run a new ground from engine block to the frame, do you think that would help?

I double checked the grounds today and couldn’t find any issues, unless there is another ground that I don’t see. The one I check is the one on the right bank between the heat shield and engine block. I can see if one sensor goes bad, but all 4 at the same time would seem unlikely.

Bosch and I had check the ground and found the ground wire is in good condition and tight.

I have a 2011 JK that has thrown 4 codes, P0031, P0037,P0051, P0057, which is all the O2 sensors and those have all been changed at the same time and as lei type as 6 months ago. I have checked everything that I can think of and can’t find any reason why it would error all 4 sensors at the same...