C1140: Hydraulic Base Brake Failure

CriticalChassisAnti-Lock Brakes

What does C1140 mean?

C1140 is a diagnostic trouble code indicating "Hydraulic Base Brake Failure". This code relates to your vehicle's anti-lock brakes and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.

Common causes

  • Faulty anti-lock brakes component
  • Wiring or connector issue in the related circuit
  • Failed sensor providing incorrect readings
  • Software/calibration issue requiring ECU update
  • Related component causing secondary fault

What should you do?

This is a critical issue. Stop driving as soon as it is safe to do so and have the vehicle inspected immediately. Continuing to drive could cause further damage or pose a safety risk.

Get a diagnosis for YOUR car

Code C1140 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.

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Related codes

C1127Cruise Control Deactivator Brake Switch Circuit Failure
C1125Brake Fluid Level Sensor Input Circuit Failure
C1157Park Brake Actuator Assembly Switch Applied Circuit Failure
C1162Park Brake Switch # 2 Released Circuit Failure