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DTC C1254/54 Pressure Switch Circuit: Description

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

Fig 1: Pressure Switch Communication Diagram
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DTC DETECTION CONDITION AND TROUBLE AREA

DTC Code DTC Detection Condition Trouble Area
C1254/54 There is an accumulator pressure sensor malfunction (the fluid pressure does not change when the pump operates or when the brake is applied).
  • Hydraulic brake booster
  • Accumulator pressure sensor
  • Master cylinder pressure sensor
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