[MYVW]

Originally Posted by MYVW

Thanks very much for the quick response. Funny you say the "blue" wire, I was just
beginning to suspect that wire might be the issue. I am not using any aftermarket speakers nor amplifiers. Was a simple replace of the stock radio with a Pioneer DEH 1900MP. I'll try disconnecting the blue wire thats part of the harness that came with the radio. We'll see....


Thanks again for your advice...

...Bob

Eureka....problem was the blue wire. The guys that installed the radio had the blue and blue/white wires tied together in the radio adapter harness. Once the blue wire was cut the diagnostic computer was able to connect and read the obd's. What a fiasco.