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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
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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)
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