Code reader and factory radio

jakthree · #1 (**permalink**) 03-21-2009, 11:36 PM

Hi,
I was told that DTC codes could not be read by any code reader if the factory radio has been removed and replaced with an aftermarket radio.

Is this true?
Do I have to reinstall the factory radio to read the check engine codes?

Thank you,

cep · #2 (**permalink**) 03-22-2009, 12:00 AM

Go to the VAG COM website and read what they have to say.

http://www.ross-tech.com/vag-com/aftermarket-radio.html

It has to do with there being power on a wire that VAG COM is not expecting to be powered.

I don't know about regular code readers.

jakthree · #3 (**permalink**) 03-22-2009, 12:58 AM

cep,
I read thru the link you provided. I now understand the possible problem. I will used my volt meter to check between pins 4-7.
Thank you for the detailed answer

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