Honda does or did have some peculiar ideas of managing issues. My friends era mdx also pilots would disable the 4wd if you threw any engine code or if your voltage was down a hair. The system controlling the awd operated on very low power so was sensitive. The main problem was having the adjust the lifters/valves was needed to keep the light off for good. You could reset the codes and be good for a varying period of time. Ideally these issues should be taken care of if you follow the maintenance schedule to the t. But they're just a little overly cautious by disabling functions such as half an engine or 2 of the wheels power.
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