C0150
Regenerative Braking System Malfunction
2001-2005 BMW 325i E46 2.5L I6
High SeverityChassisGeneric (SAE)
Description
General fault in the regenerative braking system that recovers energy during deceleration.
Symptoms
- Regenerative braking warning light
- Reduced fuel economy
- Braking feel changes
- Battery not charging during braking
Common Causes
- Hybrid battery state-of-charge issue
- Inverter malfunction
- Motor-generator fault
- Communication error between brake and hybrid modules
Diagnostic Steps
- Check hybrid battery SOC and health
- Scan hybrid powertrain module for related codes
- Test motor-generator output during braking
- Verify CAN communication between brake and hybrid modules
- Check for high-voltage isolation faults
Repair Notes
Diagnose hybrid powertrain system. Regenerative braking requires a healthy battery and motor-generator system.
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
C0150 on Other Vehicles
Common Questions
What does code C0150 mean on a 2001-2005 BMW 325i E46?
C0150 stands for "Regenerative Braking System Malfunction". General fault in the regenerative braking system that recovers energy during deceleration.
What are the symptoms of C0150 on a BMW 325i E46?
Common symptoms of C0150 include: Regenerative braking warning light, Reduced fuel economy, Braking feel changes, Battery not charging during braking.
What causes C0150 on a 2001-2005 BMW 325i E46?
Common causes of C0150 include: Hybrid battery state-of-charge issue, Inverter malfunction, Motor-generator fault, Communication error between brake and hybrid modules.