Engine-Codes - Generic - C1421

C1421 Code - Open or Short in Master Cylinder Pressure Sensor

- Code Popularity: 18,470 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC C1421?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Brake Actuator Assembly (Master Cylinder Pressure Sensor)
  • Brake Actuator Assembly harness is open or shorted
  • Brake Actuator Assembly circuit poor electrical connection
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How to Fix the DTC C1421?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the C1421 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the C1421 Code Mean?

The Master Cylinder Pressure Sensor is connected to the Skid Control ECU (Brake Actuator Assembly). The Skid Control ECU monitors the Master Cylinder Pressure Sensor. The Skid Control ECU sets the Diagnostic Trouble Code (DTC) when the Master Cylinder Pressure Sensor is not to factory specifications.

C1421 Code - Open or Short in Master Cylinder Pressure Sensor

Need more Information on the Code?

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Code C1421 Information for Specific Makes

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