DTC C1256/56 Accumulator Low Pressure: Description

The accumulator pressure sensor is connected to the skid control ECU in the master cylinder solenoid.

Fig 1: Accumulator Low Pressure - Wiring Diagram

DTC DETECTING CONDITIONS AND TROUBLE AREAS REFERENCE

DTC No.	DTC Detecting Condition	Trouble Areas
C1256/56	Fluid pressure inside the accumulator drops below the specification value.	Hydraulic circuit Hydraulic brake booster (accumulator pressure sensor) Master cylinder solenoid (skid control ECU)