C1A64 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 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.
Code C1A64 Description
What are the Possible Causes of the DTC C1A64?
- Faulty Vehicle Stability Control System
- Faulty Brake Actuator Assembly (Skid Control ECU)
- Faulty Driving Support ECU Assembly
How to Fix the DTC C1A64?
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 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.
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Information for Specific Makes
- C1A64 Lexus — Brake Control Signal Mismatch
- C1A64 Toyota — Brake Control Signal Mismatch
Frequently Asked Questions about C1A64 Code
1. What does OBDII code C1A64 mean?
Code C1A64 indicates a "Brake Control Signal Mismatch," meaning the brake control system is detecting inconsistent or conflicting signals from its components.
2. What are the common symptoms of code C1A64?
Symptoms may include the illumination of warning lights like the ABS or traction control light, diminished braking performance, or erratic behavior of driver-assist systems.
3. What causes the C1A64 code to appear?
Common causes include a faulty brake control module, damaged wiring or connectors, sensor calibration issues, or software glitches in the vehicle's control system.
4. Can I drive my car with the C1A64 code?
While the car may still be drivable, safety features like ABS or traction control could be compromised, posing a safety risk. Diagnosis and repair should be prioritized.
5. How is the C1A64 code diagnosed?
A technician will inspect the brake control module, check for wiring or connector damage, and perform tests on related sensors to identify inconsistencies or faults.
6. What is the most common fix for code C1A64?
Repairs often involve replacing a faulty brake control module, repairing damaged wiring, or recalibrating sensors to ensure proper communication.
7. Can software updates fix the C1A64 code?
In some cases, a software update for the brake control module may resolve the issue if it stems from a programming error or a known glitch.
8. How much does it cost to fix a C1A64 code?
Repair costs can range from $100 for minor wiring repairs to $1,000 or more if the brake control module needs replacement, depending on the vehicle make and model.
9. Does a faulty wheel speed sensor cause the C1A64 code?
Yes, a malfunctioning wheel speed sensor can contribute to the C1A64 code if it creates a mismatch in brake control signals.
10. How can I prevent the C1A64 code from recurring?
Regular maintenance, including inspecting brake components and electrical connections, as well as addressing warning lights promptly, can help prevent recurrence.
Discuss the causes and fixes for C1A64 OBDII Code
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