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There are several issues with my MDX... I am fortunate enough to know someone that owns an on-board diagnostic scanner,
but they have no idea what these codes indicate the problem to be. Obviously, the SH-AWD, VSA, and ABS aren't working, I am wondering what the
problem could be or if you've had this problem before.

44-50 Coil power supply voltage low voltage
77-02 VSA controller area Network communication VSA electronic control unit malfunction
77-01 Powertrain control module controller area network
P0420 Catalyst system efficiency below threshold -- Showed up 3 times

The OBD2 indicated there were no issues with the engine or transmission.

Please help!
 
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