C1422
Master Cylinder Pressure Sensor Zero Point High Malfunction
C1422 is an OBD-II diagnostic trouble code meaning: Master Cylinder Pressure Sensor Zero Point High Malfunction. Common causes: master cylinder pressure sensor malfunction, damaged or corroded sensor wiring harness. Estimated repair cost: $56–167.
Symptoms
- The brake system fault indicator is on
- Incorrect operation of ABS or ESC
- Reduced braking performance
- Problems with the brake assist system
Causes
- Master cylinder pressure sensor malfunction
- Damaged or corroded sensor wiring harness
- Poor contact in the sensor connector
- Problems with the brake ECU
- Sensor contamination
How to Fix
- Check the resistance and voltage of the master cylinder pressure sensor
- Inspect the wiring harness and sensor connectors
- Clean or replace sensor if necessary
- Check circuit continuity and grounding
- If necessary, replace the sensor or restore the wiring harness
- Reset the error and take a test drive
Related codes
FAQ
What does the C1422 code mean?
C1422 is an OBD-II diagnostic trouble code that indicates: Master Cylinder Pressure Sensor Zero Point High Malfunction
What causes a C1422 error code?
The most common causes of C1422 include: Master cylinder pressure sensor malfunction; Damaged or corroded sensor wiring harness; Poor contact in the sensor connector; Problems with the brake ECU.
How do I fix a C1422 diagnostic trouble code?
To fix C1422: Check the resistance and voltage of the master cylinder pressure sensor. Inspect the wiring harness and sensor connectors. Clean or replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C1422?
Limited driving only, diagnose soon
How much does it cost to fix C1422?
The estimated repair cost for C1422 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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