Fault Code 29

Fault code 29

Outside air/recirculation air motor - No reaction to activation, signal unclear

Diagnostic conditions
- Ignition on

NOTE:
- No control module fault stored
- No fault with supply voltage (5 V)

Possible cause of fault
- Short circuit to voltage/ground or open circuit in the wiring between the air-conditioning system regulator and the outside air/recirculation air
- Servo motor for outside air/recirculation air faulty or flap does not open/close smoothly.

Affected terminals
Plug B, terminals 9, 17 and 20
Plug D, terminals 5 and 13

Diagnosis/troubleshooting

Diagnosis/troubleshooting (Part 1):

Diagnosis/troubleshooting (Part 2):

Diagnosis/troubleshooting (Part 3):