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2009 Acura TL All Wheel Drive Code 44, Check SH-AWD Light

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2009 Acura TL All Wheel Drive Code 44, Check SH-AWD Light

 
Old 03-01-2019, 10:51 AM
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Lightbulb 2009 Acura TL All Wheel Drive Code 44, Check SH-AWD Light

I'm making this post for future Googlers of the problems in the title. When this popped up for me (with no OBD codes when I plugged a scanner in) and I googled the code and issue, I didn't find much info other than the code descriptions saying possible bad relays and a post in the RDX forums. When I took it into the dealership where I have a really good relationship, it turned out to be a bad battery. So, future googlers, if you have these lights pop up and the code 44 show up on the HUD messages, check your battery before freaking out. Apparently what happens is that when the voltage falls below a certain threshold, some systems that require a certain voltage start throwing codes.
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