AutoCodes – Toyota – C1428 Toyota

C1428 Toyota Code - Actuator Pump Motor Circuit Malfunction

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: C1428 Toyota indicates Actuator Pump Motor Circuit Malfunction.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 16,566

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 29, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C1428 Toyota 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 C1428 Toyota - Actuator Pump Motor Circuit Malfunction - AutoCodes.com — C1428 Toyota Code - Actuator Pump Motor Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC C1428 Toyota?

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 C1428 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 C1428 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 C1428 Toyota code?

Need more information on how to fix the C1428 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1428 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

C1428 2013 Toyota RAV4 — Actuator Pump Motor Circuit Malfunction
C1428 2014 Toyota RAV4 — Actuator Pump Motor Circuit Malfunction
C1428 2015 Toyota RAV4 — Actuator Pump Motor Circuit Malfunction
C1428 2016 Toyota RAV4 — Actuator Pump Motor Circuit Malfunction
C1428 2017 Toyota RAV4 — Actuator Pump Motor Circuit Malfunction
C1428 2018 Toyota RAV4 — Actuator Pump Motor Circuit Malfunction

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 C1428 Toyota Code

1. What does OBDII code C1428 mean on a Toyota?

C1428 indicates an Actuator Pump Motor Circuit Malfunction, which involves an issue in the circuit controlling the ABS actuator pump motor.

2. What are the common symptoms of code C1428?

Symptoms may include the ABS warning light illuminating, reduced braking performance, or a complete loss of ABS functionality.

3. What causes the C1428 code in a Toyota?

Common causes include a faulty ABS pump motor, damaged wiring or connectors in the actuator pump motor circuit, or a malfunctioning ABS control module.

4. Can I drive with a C1428 code on my Toyota?

While the vehicle may still be drivable, itâ€™s unsafe as the ABS system may not function properly, especially during emergency braking or slippery conditions.

5. How is the C1428 code diagnosed?

A technician will use a scan tool to read the code, inspect the ABS actuator pump motor, check the wiring and connectors, and test the ABS control module.

6. How can I fix the C1428 code on my Toyota?

Repairs may involve replacing the ABS actuator pump motor, repairing damaged wiring or connectors, or replacing the ABS control module if itâ€™s defective.

7. What tools are needed to troubleshoot the C1428 code?

Youâ€™ll need an OBDII scanner, a multimeter for circuit testing, and potentially wiring diagrams for the ABS system.

8. How much does it cost to repair a C1428 code on a Toyota?

The cost can vary widely but may range from $200 to $1,000 depending on whether the issue is with the wiring, ABS pump motor, or control module.

9. Can a weak battery cause the C1428 code to appear?

Yes, a weak or failing battery can cause electrical issues that may trigger the C1428 code, as it can affect the ABS motor circuitâ€™s performance.

10. How can I prevent the C1428 code from recurring?

Regularly inspect and maintain the ABS system, ensure proper electrical connections, and replace worn-out components like the pump motor or control module when necessary.