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Old December 11th, 2009, 12:54 AM   #1
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pre cat delete and cel now help

hi all.
hi all. got a 06 acura tl with s/c had the pro cat, now I have the pre-cat deletes on. About 30-60 miles of driving I got a cel code P0139 02 circuit slow response (bank 1, sensor 2). I have the O2 simulators in the car. Any input guy? so this code is related to the o2 sensor in the bank of the engine?

thanks
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Old December 11th, 2009, 04:07 AM   #2
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Your rear O2 sim is not funtioning properly and the ECU is B****** about it.
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Old December 11th, 2009, 07:42 AM   #3
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^what he said what kind of 02 sim you using
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Old December 11th, 2009, 12:42 PM   #4
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the O2 simulators I have on the car are the one which come with the pre-cat deletes from richie. any advice what to do? should I replace the o2 simulator?
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Old December 11th, 2009, 01:22 PM   #5
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Quote:
Originally Posted by NVA-AV6 View Post
Your rear O2 sim is not funtioning properly and the ECU is B****** about it.
hahaha thats awesome that actually made me laugh out loud
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Old December 11th, 2009, 01:33 PM   #6
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the O2 simulators I have on the car are the one which come with the pre-cat deletes from richie. any advice what to do? should I replace the o2 simulator?
Make sure the O2 sensor is re-connected, if it is then it is probably bad.
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Old December 11th, 2009, 07:05 PM   #7
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ok thanks for the help...
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Old February 11th, 2010, 11:42 PM   #8
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woo sorry for the old thread bump but im having the same issue. And it started right after i installed my precat deletes. Any ideas to what it could be? could it be that i didn't tighten the 02 sensor enough? i did notice a white corrosion on the 02 sensor when i took it out of the stock cat
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Old February 12th, 2010, 02:37 AM   #9
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You may have knocked crap into the sensor, check for leaks in the system, if you can't find any, replace the sensor.
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Old February 12th, 2010, 09:37 AM   #10
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i dont think there are any leaks, i do get the precat delete hissing sound under acceleration but i was told that was normal, especially since i have no resonators.

Can i use one of the cheap o2 sensors online? or does it have to be oem
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Old February 12th, 2010, 09:50 AM   #11
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Just be sure to use eaither Denso or NTK sensors, never use Bosch or others.
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Old February 12th, 2010, 09:54 AM   #12
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sweet, and cleaning my current o2 sensor is pointless?

also which sensor is the bank 1 sensor 2? is that in the rear precat on the bottom?
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Old February 12th, 2010, 09:57 AM   #13
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Cleaning doesn't really work and can actually f it up more, yes it is the rear secondary.
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Old February 12th, 2010, 10:33 AM   #14
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sweet ill check it out, ill just tighten it and we'll see what happens from there on. does this effect the car in any way other than have a glowing CEL?
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Old February 12th, 2010, 11:18 AM   #15
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Emmissions failure
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