What causes C1256 on a Toyota?

Failing brake accumulator unable to hold pressure Worn hydraulic pump Internal leak in the actuator Low brake fluid level Failing pressure sensor

How do I fix C1256 on a Toyota?

Check brake fluid level first Listen for excessive pump run time Test accumulator pre-charge where serviceable Monitor pressure build and hold times Replace the accumulator or pump per pressure tests

C1256 Accumulator Low Pressure Malfunction

Q: What does C1256 mean on a Toyota?

C1256 — Accumulator Low Pressure Malfunction. Applies to Land Cruiser, 4Runner, Tundra with accumulator brake systems.

Category: Chassis
Severity: Check Engine Light
Applies to: Land Cruiser, 4Runner, Tundra with accumulator brake systems

What does C1256 mean on a Toyota?

C1256 — Accumulator Low Pressure Malfunction. This Toyota-enhanced code applies to Land Cruiser, 4Runner, Tundra with accumulator brake systems.

Common causes of C1256

Failing brake accumulator unable to hold pressure
Worn hydraulic pump
Internal leak in the actuator
Low brake fluid level
Failing pressure sensor

How to fix C1256

Check brake fluid level first
Listen for excessive pump run time
Test accumulator pre-charge where serviceable
Monitor pressure build and hold times
Replace the accumulator or pump per pressure tests