Test point 12: Elimination:

Check plug on control module for contact and damage.
Check wire to sensor for damage.
Once the cause of the fault has been found and eliminated, actuate the height adjustment switch. The text in the fault memory changes from present to not present if the cause of the fault has really been eliminated.
If no fault is detected in the wire on the sensor, replace the electric motor for height adjustment.
If the fault is still present, replace control module.