Possible causes, elimination, notes

This fault is stored in the following cases:

1. There is a short circuit in the wires to the pressure sensor.
2. The pressure sensor is faulty.
3. The control module is faulty.

Elimination: 

• Disconnect plug from control module, check for continuity with ohmmeter on Pin 2 and Pin 3, and on Pin 1 and Pin 3. If a short circuit is found, check the sensor wires first.
• If no fault is detected in the wire, replace lumbar adjustment. 
• Once the cause of the fault has been found and eliminated, actuate the lumbar 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 the fault is still present  , replace control module.