Hi Steven,
The poor condition of the fluid does not appear to cause your P0711 DTC. This is a circuit code for the temp sensor. I suspect you have a failed sensor but I included the test to properly diagnose it.
As for the MAF sensor DTC, that is not related at all. I suspect you already corrected your issue once by cleaning the sensor. Unfortunately, cleaning it only buys you some time. You may have to end up replacing it at some point. Cleaning it may help again but there is no telling how long it will last.
https://www.2carpros.com/articles/mass-air-flow-service
With all that being said, I would change your ATF as well. Even though it probably did not cause this, you will have shifting issues in the future if it continues to deteriorate.
Please let me know if you need anything else. Thanks
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Tuesday, May 21st, 2019 AT 6:05 PM