C0155
Regenerative Braking Torque Sensor Fault
2006-2011 BMW 325i 3.0L I6 N52
Moderate SeverityChassisGeneric (SAE)
Description
The torque sensor that monitors regenerative braking output is reporting invalid data.
Symptoms
- Regen braking warning
- Reduced energy recovery
- Braking force inconsistent
- Hybrid efficiency reduced
Common Causes
- Faulty regen torque sensor
- Sensor wiring damaged
- Motor-generator feedback fault
- Sensor connector corroded
Diagnostic Steps
- Read regen torque sensor data during braking
- Compare motor-generator actual torque to commanded
- Inspect sensor wiring
- Check sensor connector
- Test sensor through full range
Repair Notes
Replace regen braking torque sensor. Recalibrate after replacement.
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
C0155 on Other Vehicles
Common Questions
What does code C0155 mean on a 2006-2011 BMW 325i?
C0155 stands for "Regenerative Braking Torque Sensor Fault". The torque sensor that monitors regenerative braking output is reporting invalid data.
What are the symptoms of C0155 on a BMW 325i?
Common symptoms of C0155 include: Regen braking warning, Reduced energy recovery, Braking force inconsistent, Hybrid efficiency reduced.
What causes C0155 on a 2006-2011 BMW 325i?
Common causes of C0155 include: Faulty regen torque sensor, Sensor wiring damaged, Motor-generator feedback fault, Sensor connector corroded.