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I've used my own VCDS/VAG-COM cable to clear codes on my Volt using the basic OBD2 functionality. Particularly the annoying "service high voltage system" due to either low coolant ( fill it to the top ) or what is widely suspected as a faulty sensor ( hit the dealer or buy
WopOnTour's dongle http://gm-volt.com/forum/showthread.php?255506-SERVICE-HIGH-VOLTAGE-CHARGING-SYSTEM-MESSAGE-WOTs-LEVEL-SENSOR-SHVCS-DEFEAT-DEVICE&p=3573370#post3573370 )

I have the "cheap" MicroCan cable. It sells for $249 on their site ( http://www.ross-tech.com/ ), but really unless you also own a VAG car it's not worth it. If you do however own a VW, Audi, Porsche Skoda or whatever dozen other makes, it's priceless. You can recode just about everything the car does. ( Would be really great if GM offered something similar )

Anyways to clear the codes it is simple.

Connect the cable to the Volt OBD2 port. It'll light up green.

Power on the car as normal and leave it in park.

Open up VCDS and Choose OBD2





Next choose Mode 2 freeze frame to read your codes, click save log and save them if you wish.

Next choose Mode 4 clear codes. Done.

If they come back, you need to see the stealership or real mechanic as it's not a fluke.
 

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Is this program in generic OBD mode any more extensive than say, Torque with a generic adapter?
Or it triggers the same clear routine?
 

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DOH, makes me wish I hadn't sold my VAG-COM cable when I sold my TDI to get the Volt. Oh well.
 
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