AutoCodes – Toyota – C1423 Toyota

C1423 Toyota Code - Master Cylinder Pressure Sensor Zero Point Low Malfunction

Quick Answer

The Master Cylinder Pressure Sensor is connected to the Skid Control ECU (Brake Actuator Assembly). Common causes include Faulty Brake Actuator Assembly (Master Cylinder Pressure Sensor), Brake Actuator Assembly harness is open or shorted, Brake Actuator 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
C1423 Toyota indicates Master Cylinder Pressure Sensor Zero Point Low Malfunction.
Common causes
Common causes include Faulty Brake Actuator Assembly (Master Cylinder Pressure Sensor), Brake Actuator Assembly harness is open or shorted, Brake Actuator 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 4,642
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 22, 2023
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Code C1423 Toyota Description

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.
OBDII Code C1423 Toyota - Master Cylinder Pressure Sensor Zero Point Low Malfunction - AutoCodes.com
C1423 Toyota Code - Master Cylinder Pressure Sensor Zero Point Low Malfunction

What are the Possible Causes of the DTC C1423 Toyota?

  • Faulty Brake Actuator Assembly (Master Cylinder Pressure Sensor)
  • Brake Actuator Assembly harness is open or shorted
  • Brake Actuator Assembly circuit poor electrical connection

How to Fix the DTC C1423 Toyota?

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 C1423 Toyota 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 C1423 Toyota code?

Need more information on how to fix the C1423 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1423 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

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 C1423 Toyota Code

1. What are the common symptoms of OBDII code C1423 in a Toyota related to the Master Cylinder Pressure Sensor Zero Point Low Malfunction?

The common symptoms include the illumination of the check engine light, decreased brake performance, and potential ABS system malfunctions.

2. What are the possible causes of OBDII code C1423 in a Toyota?

The code C1423 can be caused by issues with the master cylinder pressure sensor, low brake fluid level, faulty ABS module, or damaged wiring/connectors.

3. How can I diagnose the OBDII code C1423 in my Toyota?

Diagnosing OBDII code C1423 involves using a diagnostic scanner to retrieve the trouble codes, inspecting the brake fluid level, checking the master cylinder pressure sensor, and testing the ABS system components.

4. Can I continue driving my Toyota with OBDII code C1423 present?

It is not advisable to drive the vehicle with OBDII code C1423 present, as it can affect brake performance and compromise safety. It is recommended to address the issue promptly.

5. How can I repair OBDII code C1423 in my Toyota?

Repairing OBDII code C1423 may involve replacing the master cylinder pressure sensor, addressing any brake fluid leaks, repairing damaged wiring, or recalibrating the ABS system.

6. Is it safe to reset the OBDII code C1423 without fixing the underlying issue?

Resetting the code without fixing the underlying issue may temporarily turn off the check engine light, but the problem will likely reoccur. It is essential to address the root cause of the malfunction.

7. Can a DIY enthusiast fix OBDII code C1423 in a Toyota?

Depending on your experience and access to tools, some aspects of addressing OBDII code C1423, such as checking brake fluid levels or inspecting wiring, may be within reach for a DIY enthusiast. However, complex repairs may require professional assistance.

8. How much does it cost to repair OBDII code C1423 in a Toyota?

The cost of repairing OBDII code C1423 can vary depending on the root cause of the issue, labor costs, and replacement parts. It is recommended to obtain quotes from different repair shops for an accurate estimate.

9. Can extreme weather conditions affect the occurrence of OBDII code C1423 in a Toyota?

Extreme weather conditions, particularly cold temperatures, can impact the brake fluid and sensor performance, potentially leading to the triggering of OBDII code C1423. It is essential to maintain proper vehicle maintenance in all weather conditions.

10. Will OBDII code C1423 cause my Toyota to fail an emissions test?

While OBDII code C1423 is related to the brake system and not emissions specifically, a vehicle with unresolved issues related to safety systems like brakes may fail an emissions test if the check engine light is illuminated. It is crucial to address any trouble codes before undergoing an emissions test.

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