C05B1

Brake Hydraulic Circuit D Leak

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Reduced braking performance
ABS or brake light comes on
Brake fluid leak

Causes

Damage to brake lines or hoses
Master cylinder malfunction
Problems with the ABS module
Loose connections in the hydraulic circuit

How to Fix

Check brake lines and hoses for damage
Inspect connections for leaks
Check the brake master cylinder and ABS module
Replace damaged components and bleed the brake system

Related codes

C05B0 C05B2 C05B3