For 1990-2009 cars

Causes | Corrections
--- | ---
Air in the brake system | Bleed the brake system.
Improper rear brake adjustment | Adjust the rear brake linings.
Leaking brake pipe/connection | Locate and fix the brake pipe/connection.
Leaking caliper piston seal | Replace the caliper piston seal.
Leaking master cylinder (internally) | Repair/replace the master cylinder.
Leaking rear wheel cylinder | Repair/replace the rear wheel cylinder.
Leaking proportioning valve | Replace the proportioning valve.
Contaminated/improper brake fluid | Flush the brake system and repair affected brake components.
Uneven lining material | Replace the linings as an axle set.
Front and/or rear brake assembly attachment loose | Locate and tighten loose brake components.
Excessive vehicle loading | See tire placard for vehicle capacity specification.