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Update
The problem was a bad voltage regulator on a Valeo alternator
The voltage output was at times much too high (17+ volts)
Replaced the voltage regulator with an aftermarket model
that had a much larger heat sink
Just completed a 3,000 trip with no control module faults
I suspect the Valeo voltage regulator has a weak design fault
If it goes again, I would replace the alternator with a Bosch unit
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