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2009
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Elantra GLS, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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DTC Troubleshooting Procedures
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DTC U0101 Serial Communication Problem With TCU (Timeout)
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DTC Description
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
DTC Description
The ECM determines CAN communication error and sets DTC U0101 if no message received from TCM