B0242low severityBody
Sunroof Drain Blockage Detected
on 2010 Cadillac CTS 3.0L V6 · AWD
What this code means
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.
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Other Body codes on this vehicle
B0001
Driver Frontal Stage 1 Deployment Control
B0001
Driver Frontal Stage 1 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0002
Driver Frontal Stage 2 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0003
Passenger Frontal Stage 1 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0004
Passenger Frontal Stage 2 Deployment Control
B0005
Driver Knee Airbag Deployment Circuit
B0005
Driver Knee Airbag Deployment Circuit