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C1256 fault code: what it means

C1256: Brake accumulator low pressure on Lexus hybrids. Brake assist can drop away and the brake warnings come on; one of the codes Lexus used for actuator warranty cover.

Chassis (brakes, steering, suspension) · Safety risk

Usual causes, most likely first

  1. internal leak in the brake actuator/accumulator
  2. worn brake pump motor
  3. low brake fluid

C1256 by make

Lexus

Brake accumulator low pressure on Lexus hybrids. Brake assist can drop away and the brake warnings come on; one of the codes Lexus used for actuator warranty cover.

Usual causes: internal leak in the brake actuator/accumulator; worn brake pump motor; low brake fluid

What the repair usually costs

Not sure what C1256 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.