C0096moderate severityChassis
Brake Lamp Switch Circuit 2 Malfunction
on 2021 Mazda MX-5 Miata 2.0L I4 · RWD
What this code means
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.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Signal Erratic