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my buddy check engine light is on and i checked it with my lil cheap scanner and it says the code is 0134 and it means (02 sensor no activiity) but does anyone would which one cuz theres 2 sensor one in the top and one in the bottom...how i would find out which is faulty code...like i said my scanner is cheap all it does is tell me the code and a lil discription but not quiet sure which one is bad.....can someone give me some pointers please..

thank you
 

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you sure he has OBD2 and there are 2? What year VW?
I believe that is the first one, its got the black connector on it. Try unplugging it after clearing the code see if you get the same code. if you get the same code and another its prolly the other one (brown/red connector).
Hope that helps.
 

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Re: check engine light on code 0134 (mr.gti)

* VW DTC P0134 - O2 Sensor Circuit, Bank1 - Sensor1 No Activity Detected
It's the first sensor on the exhaust, located right on the down-pipe.
The first O2S deals with your air / fuel mixture, so get it fixed as soon as you can.
If no activity is found, like vwtuning suggested, then it's a dead sensor; locate a new one and you'll be set.
- Erik
 
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