Code 1 (DME Control Unit)
DME CONTROL UNITExplanation
This trouble code is stored when the internal self-test provides a negative result.
Troubleshooting
After clearing the trouble code memory, carry out a test run. If the defect occurs once again, disconnect the Digital Motor Electronic (DME) control unit from the wire harness for approx. 5 min in order to trigger a reset. The control unit must be replaced if the defect is repeated.