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Home/DTC Codes/Cadillac/XTS/2013-2019 3.6L V6/B0240
B0240

Sunroof Motor Circuit

2013-2019 Cadillac XTS 3.6L V6

Low SeverityBodyGeneric (SAE)

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

  1. Check sunroof fuse
  2. Test sunroof switch
  3. Apply direct power to motor
  4. Inspect sunroof tracks for debris
  5. 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

B0241Sunroof Position Sensor CircuitB0242Sunroof Drain Blockage Detected

Other Body Codes

B0240 on Other Vehicles

Cadillac ATS

2013-2019 2.0L Turbo I4

Cadillac ATS

2013-2019 2.5L I4

Cadillac ATS-V

2016-2019 3.6L Twin-Turbo V6

Cadillac CT4

2020-2024 2.0L Turbo I4

Cadillac CT4

2020-2024 2.7L Turbo I4

Cadillac CT4-V

2020-2024 2.7L Turbo I4

Cadillac CT4-V Blackwing

2022-2024 3.6L Twin-Turbo V6

Cadillac CT5

2020-2024 2.0L Turbo I4

Common Questions

What does code B0240 mean on a 2013-2019 Cadillac XTS?

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 XTS?

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 2013-2019 Cadillac XTS?

Common causes of B0240 include: Faulty sunroof motor, Sunroof track obstruction, Switch failure, Wiring damage in headliner, Sunroof off track.

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