AutoCodesToyota – C142B 2015 Toyota RAV4

C142B 2015 Toyota RAV4 Code - Motor Power Supply Voltage Circuit

Quick Answer

The Motor Relay and motor fail-safe relay are built into the Brake Actuator Assembly. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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
C142B 2015 Toyota RAV4 indicates Motor Power Supply Voltage Circuit.
Common causes
Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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 181
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 30, 2023
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Code C142B 2015 Toyota RAV4 Description

The Motor Relay and motor fail-safe relay are built into the Brake Actuator Assembly. During ABS, TRAC, VSC, brake hold, or brake assist operation, the Skid Control ECU (Brake Actuator Assembly) turns on the motor relay to run the pump motor in the Brake Actuator Assembly. When a motor system Diagnostic Trouble Code (DTC) is stored, the motor fail-safe relay cuts the power source supply to the motor relay for fail-safe operation.
This DTC may be stored when the voltage to the motor relay power source is lower than the DTC detection condition due to low output from the battery or alternator.
OBDII Code C142B 2015 Toyota RAV4 - Motor Power Supply Voltage Circuit - AutoCodes.com
C142B 2015 Toyota RAV4 Code - Motor Power Supply Voltage Circuit

What are the Possible Causes of the DTC C142B 2015 Toyota RAV4?

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

How to Fix the DTC C142B 2015 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 C142B 2015 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 C142B 2015 Toyota RAV4 code?

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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 C142B 2015 Toyota RAV4 Code

What does the OBDII code C142B mean for a 2015 Toyota RAV4?

The code C142B indicates an issue in the motor power supply voltage circuit, which is part of the vehicle’s braking or traction control system.

What are common symptoms of code C142B in a 2015 Toyota RAV4?

Symptoms may include warning lights for ABS or traction control, reduced braking performance, and potential loss of stability control functions.

What causes the C142B code to appear in a 2015 Toyota RAV4?

Common causes include a malfunctioning brake actuator assembly, wiring issues such as shorts or opens, or a faulty motor relay.

Can a weak battery trigger the C142B code in a 2015 Toyota RAV4?

Yes, a weak or failing battery can cause voltage irregularities that may trigger the C142B code.

How do you diagnose code C142B on a 2015 Toyota RAV4?

Diagnosis typically involves checking the brake actuator assembly, inspecting the wiring and connectors for damage, and testing the motor relay and power supply circuit.

Is it safe to drive a 2015 Toyota RAV4 with the C142B code?

It is not recommended to drive the vehicle with this code as it may impact braking and stability control functions, posing safety concerns.

How can the C142B code be fixed on a 2015 Toyota RAV4?

Repairs may include replacing the brake actuator assembly, fixing damaged wiring, or replacing a faulty motor relay.

Does the C142B code always require part replacement in a 2015 Toyota RAV4?

Not always. If the issue is due to a loose connector or minor wiring damage, repairs may not involve replacing major components.

Can clearing the C142B code fix the issue in a 2015 Toyota RAV4?

Clearing the code will temporarily remove it, but the underlying issue must be addressed to prevent the code from returning.

How much does it cost to repair the C142B code in a 2015 Toyota RAV4?

Repair costs vary depending on the cause but may range from $100 for wiring repairs to over $1,000 if the brake actuator assembly needs replacement.

Discuss the causes and fixes for C142B 2015 Toyota RAV4 OBDII Code

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