Sunroof Drain Blockage Detected
2007-2012 Nissan Altima 2.5L I4
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
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0242 on Other Vehicles
Nissan 200SX
1995-1998 1.6L I4 GA16DE
Nissan 200SX SE-R
1995-1998 2.0L I4 SR20DE
Nissan 240SX
1995-1998 2.4L I4 KA24DE
Nissan 300ZX
1990-1996 3.0L V6 VG30DE
Nissan 300ZX Twin Turbo
1990-1996 3.0L Twin-Turbo V6 VG30DETT
Nissan 350Z
2003-2006 3.5L V6 VQ35DE
Nissan 350Z
2007-2009 3.5L V6 VQ35HR
Nissan 370Z
2009-2020 3.7L V6 VQ37VHR
Common Questions
What does code B0242 mean on a 2007-2012 Nissan Altima?
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 Nissan Altima?
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 2007-2012 Nissan Altima?
Common causes of B0242 include: Clogged sunroof drain tube, Disconnected drain hose, Drain tube kinked behind trim, Debris in sunroof tray.