Quote:
Originally Posted by timsummers
Good Evening! I have a 1999 Amtran schoolbus with the 466E Engine and a MD3060 Allison Transmission with electronic shift pad. When I turn on the ignition if the check trans light is on the bus will not go into gear. The next time the ignition is turned on the light may not come on and the bus shifts just fine. I get a code of D12216. Is the check trans light tied to the code or are these two separate issues. Any direction with this problem would be greatly appreciated. Thank You!
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My quick google search gets you an "output speed sensor" fault on that code.
I suspect you may have an intermittent connection to the sensor, or faulty sensor....