C0111moderate severityChassis
Brake Apply Circuit Low
on 2021 Lincoln Aviator 3.0L V6 Twin Turbo · AWD
What this code means
Low signal in the brake apply circuit indicates the module does not see brake application.
Symptoms
- Cruise control inoperative
- Shift interlock stuck
- Brake lights may not illuminate
- ABS light on
Common causes
- Brake switch stuck open
- Wiring short to ground
- Brake pedal not contacting switch
- Switch plunger broken
Diagnostic steps
- Check if brake lights illuminate when pedal pressed
- Test switch continuity
- Inspect switch mounting and pedal contact
- Check wiring for shorts to ground
Repair notes
Adjust or replace brake light switch. Check pedal bumper pad.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0025
LF Wheel Speed Sensor Circuit Intermittent