AutoCodesToyota – C142A 2017 Toyota RAV4

C142A 2017 Toyota RAV4 Code - Master Cylinder Pressure Sensor Internal 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
C142A 2017 Toyota RAV4 indicates Master Cylinder Pressure Sensor Internal 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 208
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 C142A 2017 Toyota RAV4 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 C142A 2017 Toyota RAV4 - Master Cylinder Pressure Sensor Internal Malfunction - AutoCodes.com
C142A 2017 Toyota RAV4 Code - Master Cylinder Pressure Sensor Internal Malfunction

What are the Possible Causes of the DTC C142A 2017 Toyota RAV4?

  • 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 C142A 2017 Toyota RAV4?

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 C142A 2017 Toyota RAV4 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 C142A 2017 Toyota RAV4 code?

Need more information on how to fix the C142A 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C142A 2017 Toyota RAV4 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 C142A 2017 Toyota RAV4 Code

1. What does the OBDII code C142A mean on a 2017 Toyota RAV4?

The C142A code indicates a "Master Cylinder Pressure Sensor Internal Malfunction," meaning the vehicle's braking system has detected an issue with the pressure sensor inside the master cylinder.

2. What are the common symptoms of the C142A code in a 2017 Toyota RAV4?

Symptoms may include the ABS warning light or brake system warning light illuminating, reduced braking performance, and potentially a soft or spongy brake pedal feel.

3. What causes the C142A code to appear in a 2017 Toyota RAV4?

This code is usually caused by a faulty master cylinder pressure sensor, wiring issues, or a malfunction in the brake control module.

4. Can I drive my 2017 Toyota RAV4 with the C142A code?

Driving with this code is not recommended, as it could impact the performance of the braking system and compromise safety.

5. How is the C142A code diagnosed in a 2017 Toyota RAV4?

A mechanic will use a scan tool to retrieve the code, inspect the master cylinder pressure sensor, check the wiring and connections, and test the brake control module.

6. How do you fix the C142A code on a 2017 Toyota RAV4?

Repairs may involve replacing the master cylinder pressure sensor, repairing or replacing damaged wiring, or reprogramming or replacing the brake control module if necessary.

7. How much does it cost to fix the C142A code on a 2017 Toyota RAV4?

Repair costs can vary but typically range from $150 to $600 depending on the exact issue, with sensor replacement being on the lower end and module replacement on the higher end.

8. Can a faulty master cylinder pressure sensor cause the brakes to fail?

While it may not directly cause total brake failure, a faulty sensor can result in reduced braking efficiency or inconsistent brake performance.

9. Is the C142A code covered under warranty for a 2017 Toyota RAV4?

This depends on your vehicle's warranty coverage, but some manufacturers may cover brake system issues under powertrain or extended warranties.

10. Can clearing the C142A code fix the problem in a 2017 Toyota RAV4?

Clearing the code may temporarily remove the warning light, but it won’t address the underlying issue, and the code is likely to return.

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