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gomi_otaku
gomi_otaku, VW Technician
Category: VW
Satisfied Customers: 3378
Experience:  VW FastTrack '00-'01, VW Academy Chicago and Seattle '00-present, VW Certified
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O2 sensor wiring o2 sensor, just pulled O2 sensor, it has 5

Customer Question

o2 sensor wiring for generic o2 sensor
JA: Thanks. Can you give me any more details about your issue?
Customer: just pulled O2 sensor, it has 5 wires, the generic replacement one only had 4 wires, can I still use that one? How do I wire it?
JA: OK got it. Last thing — VW Mechanics generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 9 months ago.
Category: VW
Customer: replied 9 months ago.
here are some pics
Expert:  Tim's Auto Repair replied 9 months ago.

hi

what is the year,make and model of you vw?..

and i will see if i can figure it out

Customer: replied 9 months ago.
2002 vw beetle turbo s
Expert:  Tim's Auto Repair replied 9 months ago.

what engine?is it a diesel?

Expert:  Tim's Auto Repair replied 9 months ago.

1.8?

Customer: replied 9 months ago.
turbo s is a 1.8 turbo gasoline
Expert:  Tim's Auto Repair replied 9 months ago.

stand by

Expert:  Tim's Auto Repair replied 9 months ago.

sorry,i have nothing on wiring the generic

Expert:  Tim's Auto Repair replied 9 months ago.

stand by,i will opt out,maybe one of the other guys has something

someone will be right with you

Customer: replied 9 months ago.
did you take a look at the pics I sent?
Expert:  Tim's Auto Repair replied 9 months ago.

yes,,but i do not know which wires is the heater on the generic

Expert:  Tim's Auto Repair replied 9 months ago.

stand by

Expert:  gomi_otaku replied 9 months ago.

Your O2 sensor is a wideband sensor, you need to get the one that matches it. In addition, generic sensors rarely work perfectly, since the oxygen source for an O2 sensor has to come from outside the sensor, and it uses the sheathing of the wiring to do this. A spliced connection will not do the same as the stock harness.

Customer: replied 9 months ago.
here is the key that came with o2 sensor
Customer: replied 9 months ago.
here it is
Expert:  gomi_otaku replied 9 months ago.

But your sensor has one wire less than the stock sensor- there's no way to make it work.

You can buy OEM parts for VW from Partsgeek, at about the same price that an employee would get at the dealer.

Customer: replied 9 months ago.
ok, not sure if that was worth $28 since I was about to that anyway but figured you guys might know a bit more. Thanks anyways.
Expert:  gomi_otaku replied 9 months ago.

It's worth it to use the OEM parts- I have worked in shops that use parts from the Auto Value, Napa, or O'Reilly's, and more often than not they are bad out of the box the first time, or fail within a few months.