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I just posted re scanner cables and software but I have a question... as the o2 sensors feed data back to the ecu on fuel/air mixture is it possible that a dirty air cleaner could also cause this warning to appear on the dash if the airflow was restricted in any way? just thinking

Ok, trying to work through all this diagnostic data here! My question is would a $30 ScanTool 425801 OBD link SX USB with free software for windows laptops and tablets that works on all cars produced after 1996 in the US read the Commodore codes here? I know its basic but as long as it can...

thanks everyone for the info, suppose the best course is to have the fault scanned first

I have a 2005 VZ Commodore with a 3.6l 175kw Alloytec engine that is now showing the 'check drivetrain' warning on the dash. There is no obvious power drop, rough idling or high fuel use, yet! After some investigation it seems most likely due to an o2 sensor. Now I havent looked under the bonnet...