B0242
Sunroof Drain Blockage Detected
1997-2003 Audi A8 4.2L V8
Low SeverityBodyGeneric (SAE)
Description
The sunroof control system has detected conditions consistent with a blocked sunroof drain, such as a water level sensor trigger.
Symptoms
- Water leaking into cabin from headliner
- Wet spots on headliner near sunroof
- Musty smell from headliner area
- Water pooling in footwells
Common Causes
- Clogged sunroof drain tube
- Disconnected drain hose
- Drain tube kinked behind trim
- Debris in sunroof tray
Diagnostic Steps
- Inspect sunroof drain tray for debris
- Blow compressed air through drain tubes
- Check drain tubes at exit points behind wheel wells
- Inspect drain connections
- Clear debris from sunroof channel
Repair Notes
Clear blocked drain tubes with compressed air. Reconnect any disconnected tubes. Clean sunroof tray.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
- B0012Driver Side Airbag Deployment Circuit Short to Ground
- B0013Driver Side Airbag Deployment Circuit Short to Battery
B0242 on Other Vehicles
Common Questions
What does code B0242 mean on a 1997-2003 Audi A8?
B0242 stands for "Sunroof Drain Blockage Detected". The sunroof control system has detected conditions consistent with a blocked sunroof drain, such as a water level sensor trigger.
What are the symptoms of B0242 on a Audi A8?
Common symptoms of B0242 include: Water leaking into cabin from headliner, Wet spots on headliner near sunroof, Musty smell from headliner area, Water pooling in footwells.
What causes B0242 on a 1997-2003 Audi A8?
Common causes of B0242 include: Clogged sunroof drain tube, Disconnected drain hose, Drain tube kinked behind trim, Debris in sunroof tray.