C0089
Brake Fluid Level Low
2000-2003 Audi S6 4.2L V8 🇨🇦
High SeverityChassis
Description
The brake fluid level sensor confirms fluid is below the minimum acceptable level.
Symptoms
- Brake warning light on
- Low fluid warning on dash
- ABS may be disabled
- Brake pedal lower than normal
Common Causes
- Worn brake pads consuming fluid in calipers
- Brake fluid leak at caliper or hose
- Master cylinder internal leak
- Wheel cylinder leak on drum brakes
Diagnostic Steps
- Check brake fluid level visually
- Inspect all four wheels for brake fluid leaks
- Check all brake hoses and lines
- Inspect master cylinder for leaks
- Measure brake pad thickness
Repair Notes
Find and repair the leak source. Fill fluid and bleed system. Do not just add fluid without finding the cause.
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
C0089 on Other Vehicles
Common Questions
What does code C0089 mean on a 2000-2003 Audi S6?
C0089 stands for "Brake Fluid Level Low". The brake fluid level sensor confirms fluid is below the minimum acceptable level.
What are the symptoms of C0089 on a Audi S6?
Common symptoms of C0089 include: Brake warning light on, Low fluid warning on dash, ABS may be disabled, Brake pedal lower than normal.
What causes C0089 on a 2000-2003 Audi S6?
Common causes of C0089 include: Worn brake pads consuming fluid in calipers, Brake fluid leak at caliper or hose, Master cylinder internal leak, Wheel cylinder leak on drum brakes.