C128B - ABS Master Cylinder Pressure Sensor Offset Error

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Brake Pressure Modulator
  • Brake Pressure Modulator harness is open or shorted
  • Brake Pressure Modulator circuit poor electrical connection

Possible symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C128b Description

The Electronic Brake Control Module (EBCM) uses input from the master cylinder pressure sensor for more accurate control during a vehicle stability enhancement system event. The master cylinder pressure sensor is internal to the brake pressure modulator.
OBDII Code C128b - ABS Master Cylinder Pressure Sensor Offset Error - AutoCodes.com

C128B Information for specific makes

  • C128B BUICK ABS Master Cylinder Pressure Sensor Offset Error
  • C128B CADILLAC ABS Master Cylinder Pressure Sensor Offset Error
  • C128B CHEVROLET ABS Master Cylinder Pressure Sensor Offset Error
  • C128B GMC ABS Master Cylinder Pressure Sensor Offset Error

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C128B Comments

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