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Old 08-09-2010, 07:25 PM   #1
Spiffyguitar
 
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Thew check engine light... need help!!

Ok... So a few thousand miles ago I removed my secondary cats. In the process I used a 02 sensor socket to remove the 4 sensors instead of unplugging the sensors from the top. There was some twist in the cable, but when I reinstalled everything I counter twisted the cables first to take the tension off.

I still have my primary cats in... and have been driving trouble free for a few thousand miles. Now all the sudden I get a check engine light a couple days ago. It was on for a little bit, then went off on it's own. Now it's back randomly... so I thew in a reader and got the code...

"P0134 02 sensor- no activity detected, bank 1 sensor 1"

So did the car just take a few thousand miles to figure out the secondary cats are gone, or did I damage a sensor? I'm a bit confused because 1.) The sensors are before/after the primary cat, and the secondary cat isn't metered. 2.) If I did damage an 02 sensor why would it take thousands of miles to show up?

Either way it won't be covered under warranty since I removed the secondaries, so no point in taking it to a dealer.

Can someone help me out??
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Old 08-09-2010, 07:37 PM   #2
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It wont take that long for it to 'figure it out'.. when I had mine unplugged briefly it only took about 30 miles.

Chances are it has either gone unplugged again, or the vibrations finally shook loose an already damaged wire.
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Old 08-09-2010, 07:47 PM   #3
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Quote:
Originally Posted by jtzako View Post
It wont take that long for it to 'figure it out'.. when I had mine unplugged briefly it only took about 30 miles.

Chances are it has either gone unplugged again, or the vibrations finally shook loose an already damaged wire.


It won't throw a code from removing the rear cats... EVER
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Old 08-09-2010, 10:19 PM   #4
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Quote:
Originally Posted by R1CH View Post


It won't throw a code from removing the rear cats... EVER
That's what I was thinking, because they are completely unmetered.

So dumb question for whoever knows... is bank 1 sensor 1 the driver side sensor pre-cat?
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Old 08-10-2010, 12:16 AM   #5
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I would say that or pass side rear 02. Depends if it starts at 1 or 0...
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Old 08-10-2010, 12:24 AM   #6
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I would say that or pass side rear 02. Depends if it starts at 1 or 0...
Makes sense... so maybe something like

Bank0- drivers side, sensor 0=front, sensor1= rear

Bank1- pass side, sensor 0=front, sensor1=rear

Can anyone confirm?
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Old 08-10-2010, 12:35 AM   #7
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According to obd-codes.com, it's 1 then 2 so it's most likely drivers side primary.
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Old 08-10-2010, 02:26 AM   #8
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Originally Posted by 3min3m2 View Post
According to obd-codes.com, it's 1 then 2 so it's most likely drivers side primary.
Cool... that gives me a place to start.
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