The first step in resolving this issue would be to check the OBD-II (On-Board Diagnostic System) fuse. The fuse B10 and B1, please check them with the key on, engine off.
https://www.2carpros.com/articles/how-to-check-a-car-fuse
It's also a good idea to check the connection to the OBD-II port under the dashboard. Make sure it's securely fastened and free of corrosion.
If the fuse and the connection to ground is okay and the OBD-II port appear to be in good condition, the next step would be to do a CAN scan. You can get a CAN scanner (Controller Area Network) from Amazon here is a video to show you how. You might have a DME that is not working.
https://youtu.be/u-4syLc-ifQ
and
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
This can give you more information about what may be causing the "no OBD-II communication" error. Here is the OBD2 post wiring diagrams in the images below so you can see how the system works. Please get back to me on what you find.
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Saturday, February 11th, 2023 AT 10:12 AM
