AutoCodes – Toyota – C1A64 Toyota

C1A64 Toyota Code - Brake Control Signal Mismatch

Quick Answer

The Skid Control ECU (Brake Actuator Assembly) sends signals to the Driving Support ECU Assembly according to the brake control status. Common causes include Faulty Vehicle Stability Control System, Faulty Brake Actuator Assembly (Skid Control ECU), Faulty Driving Support ECU Assembly. 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: C1A64 Toyota indicates Brake Control Signal Mismatch.
Common causes: Common causes include Faulty Vehicle Stability Control System, Faulty Brake Actuator Assembly (Skid Control ECU), Faulty Driving Support ECU Assembly.
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 359

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 03, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1A64 Toyota Description

The Skid Control ECU (Brake Actuator Assembly) sends signals to the Driving Support ECU Assembly according to the brake control status. If the Driving Support ECU Assembly receives a Vehicle Stability Control (VSC) System malfunction signal from the Skid Control ECU (Brake Actuator Assembly), it stores Diagnostic Trouble Code (DTC) C1A64.

OBDII Code C1A64 Toyota - Brake Control Signal Mismatch - AutoCodes.com — C1A64 Toyota Code - Brake Control Signal Mismatch

What does this mean?

What are the Possible Causes of the DTC C1A64 Toyota?

Faulty Vehicle Stability Control System
Faulty Brake Actuator Assembly (Skid Control ECU)
Faulty Driving Support ECU Assembly

How to Fix the DTC C1A64 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 C1A64 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 C1A64 Toyota code?

Need more information on how to fix the C1A64 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1A64 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

C1A64 2013 Toyota RAV4 — Brake Control Signal Mismatch
C1A64 2014 Toyota RAV4 — Brake Control Signal Mismatch
C1A64 2015 Toyota RAV4 — Brake Control Signal Mismatch
C1A64 2016 Toyota RAV4 — Brake Control Signal Mismatch
C1A64 2017 Toyota RAV4 — Brake Control Signal Mismatch
C1A64 2018 Toyota RAV4 — Brake Control Signal Mismatch

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 C1A64 Toyota Code

1. What does the OBDII code C1A64 mean on a Toyota?

C1A64 indicates a "Brake Control Signal Mismatch," meaning the brake control system is detecting inconsistent or incorrect signals between components.

2. What are the common symptoms of code C1A64 in a Toyota?

Symptoms may include illuminated ABS or traction control warning lights, reduced braking performance, or the vehicle entering a fail-safe or limp mode.

3. What causes the C1A64 code to appear on a Toyota?

Potential causes include faulty brake control sensors, damaged wiring or connectors, a malfunctioning ABS module, or software issues in the vehicle's control systems.

4. Can I continue driving with a C1A64 code on my Toyota?

Driving with this code is not recommended, as it may affect braking performance and compromise safety. Immediate diagnosis and repair are advised.

5. How do I diagnose the C1A64 code on my Toyota?

Diagnosis involves scanning for additional codes, inspecting the brake control system's wiring and connectors, and testing the brake control sensors and ABS module for proper function.

6. Is the C1A64 code specific to Toyota vehicles?

Yes, while other manufacturers may have similar codes, C1A64 is specific to Toyota and pertains to its brake control systems.

7. How much does it cost to fix the C1A64 code on a Toyota?

Repair costs can vary depending on the cause. Sensor or wiring repairs may cost $100-$300, while an ABS module replacement could exceed $1,000.

8. Can a software update fix the C1A64 code on a Toyota?

In some cases, a software update or reprogramming of the control unit may resolve the issue if the problem is related to outdated or corrupted software.

9. What tools are needed to troubleshoot the C1A64 code?

Youâ€™ll need an OBDII scanner capable of reading Toyota-specific codes, a multimeter for testing electrical connections, and possibly a wiring diagram for your vehicle.

10. Can a weak battery cause the C1A64 code on a Toyota?

Yes, a weak or failing battery can cause voltage irregularities that might trigger the C1A64 code. Always ensure the battery is in good condition during diagnosis.