Hi,
That means the scan tool is not able to communicate with the ECU that you are attempting to talk to.
More than likely this is one of three things:
1. The module has failed or does not have power or ground.
2. Communication wiring between the DLC and module is open or not able to communicate.
3. The scan tool is not capable of communicating on this vehicle.
I suspect it is either the first or second one. Easiest thing to do in my mind is run by a parts store and see if they can communicate with it. This will be a different scan tool so if two of them cannot communicate then you know it is something with the vehicle and not your tool.
Let me know what you find. Also, give me the background on this vehicle. Does it start and run or have you just made a repair? Thanks
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Saturday, August 17th, 2019 AT 6:53 PM