C0141high severityChassis
EBD Brake Pressure Sensor Correlation
on 2013 Audi Q7 4.2L V8 · AWD
What this code means
The brake pressure sensors used for electronic brake force distribution are not correlating properly.
Symptoms
- ABS light on
- EBD warning
- Braking feel inconsistent
Common causes
- Pressure sensor drift
- Air in brake hydraulic system
- Master cylinder internal bypass
- Sensor wiring fault
Diagnostic steps
- Compare front and rear pressure sensor readings
- Bleed brake system
- Test individual pressure sensors
- Check for master cylinder leaks
- Inspect sensor wiring
Repair notes
Bleed brake system. Replace faulty pressure sensor or master cylinder.
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