C0440
Automatic Emergency Braking System Fault
2019-2024 Mini Cooper SE Electric
Critical SeverityChassisGeneric (SAE)
Description
General malfunction in the automatic emergency braking system.
Symptoms
- AEB warning light
- Automatic braking disabled
- Forward collision mitigation unavailable
- Driver assist systems degraded
Common Causes
- Radar module fault
- Camera system error
- Brake system unable to support AEB
- Module communication failure
Diagnostic Steps
- Check for radar and camera codes
- Verify ABS/brake system is fully functional
- Test communication between AEB controller and brake module
- Inspect all AEB-related sensors
- Check for software updates
Repair Notes
Diagnose root sensor or brake system fault. AEB relies on both detection and braking subsystems.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0025LF Wheel Speed Sensor Circuit Intermittent
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
C0440 on Other Vehicles
Common Questions
What does code C0440 mean on a 2019-2024 Mini Cooper SE?
C0440 stands for "Automatic Emergency Braking System Fault". General malfunction in the automatic emergency braking system.
What are the symptoms of C0440 on a Mini Cooper SE?
Common symptoms of C0440 include: AEB warning light, Automatic braking disabled, Forward collision mitigation unavailable, Driver assist systems degraded.
What causes C0440 on a 2019-2024 Mini Cooper SE?
Common causes of C0440 include: Radar module fault, Camera system error, Brake system unable to support AEB, Module communication failure.