AutoCodes – Lexus – C1422 Lexus

C1422 Lexus Code - Master Cylinder Pressure Sensor Zero Point High Malfunction

Quick Answer

The Master Cylinder Pressure Sensor is connected to the Skid Control ECU (Brake Actuator Assembly) in the Brake Actuator Assembly. Common causes include Faulty Stop Light Switch Assembly, Stop Light Switch Assembly harness is open or shorted, Stop Light Switch Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
C1422 Lexus indicates Master Cylinder Pressure Sensor Zero Point High Malfunction.
Common causes
Common causes include Faulty Stop Light Switch Assembly, Stop Light Switch Assembly harness is open or shorted, Stop Light Switch Assembly circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 9,083
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 29, 2023
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Code C1422 Lexus Description

The Master Cylinder Pressure Sensor is connected to the Skid Control ECU (Brake Actuator Assembly) in the Brake Actuator Assembly. The Skid Control ECU monitors the Master Cylinder Pressure Sensor. The Skid Control ECU sets the OBDII code when the Master Cylinder Pressure Sensor is not to factory specifications.
OBDII Code C1422 Lexus - Master Cylinder Pressure Sensor Zero Point High Malfunction - AutoCodes.com
C1422 Lexus Code - Master Cylinder Pressure Sensor Zero Point High Malfunction

What are the Possible Causes of the DTC C1422 Lexus?

  • Faulty Stop Light Switch Assembly
  • Stop Light Switch Assembly harness is open or shorted
  • Stop Light Switch Assembly circuit poor electrical connection
  • Faulty Skid Control ECU (Brake Actuator Assembly)

How to Fix the DTC C1422 Lexus?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1422 Lexus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1422 Lexus code?

Need more information on how to fix the C1422 Lexus code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1422 Lexus code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1422 Lexus Code

1. What are the common symptoms of OBDII code C1422 in a Lexus related to the Master Cylinder Pressure Sensor Zero Point High Malfunction?

- Common symptoms include the ABS warning light being illuminated on the dashboard, loss of stability control, and potential issues with the brake system functionality.

2. What are possible causes of OBDII code C1422 in a Lexus indicating a Master Cylinder Pressure Sensor Zero Point High Malfunction?

- Possible causes include a faulty master cylinder pressure sensor, wiring issues in the sensor circuit, low brake fluid levels, or a malfunctioning ABS module.

3. How can I diagnose OBDII code C1422 in my Lexus for the Master Cylinder Pressure Sensor Zero Point High Malfunction?

- Diagnosis involves using an OBDII scanner to retrieve the specific code, inspecting the master cylinder pressure sensor and its wiring, checking brake fluid levels, and testing the ABS module if necessary.

4. Can I continue driving my Lexus with OBDII code C1422 related to the Master Cylinder Pressure Sensor Zero Point High Malfunction?

- It is not recommended to drive your vehicle with this code present, as it may affect the proper functioning of the brake system and stability control, potentially compromising safety.

5. How can I repair OBDII code C1422 in my Lexus indicating a Master Cylinder Pressure Sensor Zero Point High Malfunction?

- Repairs may involve replacing the master cylinder pressure sensor, repairing any wiring issues, ensuring proper brake fluid levels, or addressing any problems with the ABS module as needed.

6. Is it possible to reset OBDII code C1422 in a Lexus for the Master Cylinder Pressure Sensor Zero Point High Malfunction without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is not recommended as the issue causing the malfunction will persist, and the code will likely return.

7. How do I prevent OBDII code C1422 from occurring in my Lexus due to the Master Cylinder Pressure Sensor Zero Point High Malfunction?

- Regular maintenance of the brake system, including checking brake fluid levels and ensuring sensor integrity, can help prevent this code from appearing.

8. Can a DIY enthusiast fix OBDII code C1422 in a Lexus related to the Master Cylinder Pressure Sensor Zero Point High Malfunction?

- Depending on the underlying issue, some DIY enthusiasts with mechanical knowledge may be able to address the problem themselves by following repair guides and using the necessary tools.

9. Is OBDII code C1422 in a Lexus indicating a Master Cylinder Pressure Sensor Zero Point High Malfunction a common issue?

- While not extremely common, this code can occur in Lexus vehicles due to various factors affecting the master cylinder pressure sensor and related components.

10. Are there any safety precautions I should take if OBDII code C1422 appears in my Lexus due to the Master Cylinder Pressure Sensor Zero Point High Malfunction?

- It is crucial to prioritize safety and have the issue diagnosed and repaired promptly by a qualified technician to ensure the proper functioning of the brake system and stability control.

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