Brake Assist Solenoid Circuit
2022-2024 Rivian R1S Quad Motor AWD
Description
Malfunction in the brake assist solenoid that provides additional brake pressure during emergency stops.
Symptoms
- Brake assist inactive
- Warning light for brake assist
- Longer stopping distance in emergencies
Common Causes
- Faulty brake assist solenoid
- Solenoid wiring open or shorted
- Module driver failure
- Solenoid mechanically stuck
Diagnostic Steps
- Test solenoid resistance
- Check wiring to solenoid
- Command solenoid with scan tool
- Inspect for mechanical binding
- Test module output signal
Repair Notes
Replace brake assist solenoid or repair wiring.
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
C0146 on Other Vehicles
Rivian R1S
2022-2024 Large Pack Dual Motor AWD
Rivian R1S
2022-2024 Max Pack Dual Motor AWD
Rivian R1S
2022-2024 Standard Range Dual Motor AWD
Rivian R1T
2021-2024 Large Pack Dual Motor AWD
Rivian R1T
2021-2024 Max Pack Dual Motor AWD
Rivian R1T
2021-2024 Quad Motor AWD
Rivian R1T
2021-2024 Standard Range Dual Motor AWD
Common Questions
What does code C0146 mean on a 2022-2024 Rivian R1S?
C0146 stands for "Brake Assist Solenoid Circuit". Malfunction in the brake assist solenoid that provides additional brake pressure during emergency stops.
What are the symptoms of C0146 on a Rivian R1S?
Common symptoms of C0146 include: Brake assist inactive, Warning light for brake assist, Longer stopping distance in emergencies.
What causes C0146 on a 2022-2024 Rivian R1S?
Common causes of C0146 include: Faulty brake assist solenoid, Solenoid wiring open or shorted, Module driver failure, Solenoid mechanically stuck.