Sunroof Motor Circuit
2007-2007 Cadillac CTS 3.2L V6
The 2007 Cadillac CTS is equipped with a 3.2L V6 engine. Below you'll find detailed b0240 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Malfunction in the sunroof/moonroof motor circuit. The sunroof does not open, close, or tilt.
Symptoms
- Sunroof does not move
- Sunroof opens but will not close
- Motor noise but no movement
- Sunroof switch unresponsive
Common Causes
- Faulty sunroof motor
- Sunroof track obstruction
- Switch failure
- Wiring damage in headliner
- Sunroof off track
Diagnostic Steps
- Check sunroof fuse
- Test sunroof switch
- Apply direct power to motor
- Inspect sunroof tracks for debris
- Check if panel is off track
Repair Notes
Replace sunroof motor or clear track obstruction. Re-initialize sunroof if it has lost calibration.
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
B0240 on Other Vehicles
Common Questions
What does code B0240 mean on a 2007-2007 Cadillac CTS?
B0240 stands for "Sunroof Motor Circuit". Malfunction in the sunroof/moonroof motor circuit. The sunroof does not open, close, or tilt.
What are the symptoms of B0240 on a Cadillac CTS?
Common symptoms of B0240 include: Sunroof does not move, Sunroof opens but will not close, Motor noise but no movement, Sunroof switch unresponsive.
What causes B0240 on a 2007-2007 Cadillac CTS?
Common causes of B0240 include: Faulty sunroof motor, Sunroof track obstruction, Switch failure, Wiring damage in headliner, Sunroof off track.
Last updated: March 2026