Brake Lamp Switch Circuit 2 Malfunction
2004-2004 Buick Century 3.1L V6
The 2004 Buick Century is equipped with a 3.1L V6 engine. Below you'll find detailed c0096 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The secondary or redundant brake lamp switch input to the ABS/stability module is faulty.
Symptoms
- ABS light on
- Stability control disabled
- Cruise control inoperative
- Brake light inconsistency detected
Common Causes
- Secondary brake switch failure
- Wiring fault in redundant circuit
- ABS module input fault
- Switch adjustment incorrect
Diagnostic Steps
- Test both brake switch circuits
- Compare primary and secondary switch signals
- Adjust switch if out of specification
- Inspect wiring to ABS module
- Check both switch inputs at module connector
Repair Notes
Adjust or replace secondary brake lamp switch.
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
C0096 on Other Vehicles
Common Questions
What does code C0096 mean on a 2004-2004 Buick Century?
C0096 stands for "Brake Lamp Switch Circuit 2 Malfunction". The secondary or redundant brake lamp switch input to the ABS/stability module is faulty.
What are the symptoms of C0096 on a Buick Century?
Common symptoms of C0096 include: ABS light on, Stability control disabled, Cruise control inoperative, Brake light inconsistency detected.
What causes C0096 on a 2004-2004 Buick Century?
Common causes of C0096 include: Secondary brake switch failure, Wiring fault in redundant circuit, ABS module input fault, Switch adjustment incorrect.
Last updated: March 2026