C0111moderate severityChassis
Brake Apply Circuit Low
on 2018 Jeep Wrangler 3.6L V6 · 4WD
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
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