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Old 07-10-2013, 04:01 PM   #1
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Catalyst efficiency low-bank 2

My 2000 TJ just happened to light up the check engine indicator. This is the code I pulled at autozone. Any thoughts? I am running a rugged ridge cold-air intake and Borla cat-back but the original cat...

thanks in advance

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Old 07-11-2013, 12:58 PM   #2
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I would replace the rear sensor first. Followed by the front sensor and finally the cat itself if it still persists. While the likelihood of the front sensor being the culprit is probably small, it's probably cheaper and easier than the cat.

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Old 07-11-2013, 01:52 PM   #3
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Is the replacement of the sensors something I could do on my own? Or is this something I need to enlist the services of a shop? I have no idea so any input / guidance would be appreciated
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Old 07-11-2013, 01:57 PM   #4
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Before you do anything, tighten the manifold bolts as they are known to work loose.


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Old 07-15-2013, 03:51 PM   #5
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Quote:
Originally Posted by LBIHUI View Post
Is the replacement of the sensors something I could do on my own? Or is this something I need to enlist the services of a shop? I have no idea so any input / guidance would be appreciated
DIY. They make a special socket to go around the sensor that provides a slot for the wiring to slip into. They can get rusted in pretty good, so multiple applications of a break free oil may be needed. Make sure the replacement sensors are direct plug in. Don't mess with the ones that make you cut and splice any wires.
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