AutoCodes – Lexus – C1428 Lexus

C1428 Lexus 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 Lexus 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.
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Code Popularity 3,159
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 C1428 Lexus 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 Lexus - Actuator Pump Motor Circuit Malfunction - AutoCodes.com
C1428 Lexus Code - Actuator Pump Motor Circuit Malfunction

What are the Possible Causes of the DTC C1428 Lexus?

  • 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 Lexus?

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 Lexus 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 Lexus 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 C1428 Lexus Code

1. Q: What are the common symptoms of OBDII code C1428 in a Lexus related to Actuator Pump Motor Circuit Malfunction?

A: Common symptoms include illumination of the check engine light, ABS warning light, and possibly a decrease in braking performance.

2. Q: What are some possible causes of OBDII code C1428 in a Lexus indicating Actuator Pump Motor Circuit Malfunction?

A: Causes can include a faulty actuator pump motor, damaged wiring harness, blown fuse, or issues with the ABS control module.

3. Q: How can I diagnose the OBDII code C1428 in a Lexus for Actuator Pump Motor Circuit Malfunction?

A: Diagnosis typically involves using an OBDII scanner to read the code, conducting a visual inspection of the wiring, checking the fuses, and testing the actuator pump motor.

4. Q: Can I continue driving my Lexus with the OBDII code C1428 related to Actuator Pump Motor Circuit Malfunction?

A: It is not recommended to continue driving the vehicle with this code present, as it can affect the performance of the ABS system and compromise braking safety.

5. Q: How can I repair OBDII code C1428 in a Lexus for Actuator Pump Motor Circuit Malfunction?

A: Repair options may include replacing the actuator pump motor, repairing or replacing damaged wiring, checking and replacing fuses, or recalibrating the ABS system.

6. Q: Is it possible to reset the OBDII code C1428 related to Actuator Pump Motor Circuit Malfunction in a Lexus without fixing the issue?

A: While clearing the code with an OBDII scanner is possible, it is not recommended as the underlying issue causing the code will still persist and could lead to safety risks.

7. Q: How much does it typically cost to repair OBDII code C1428 in a Lexus for Actuator Pump Motor Circuit Malfunction?

A: Repair costs can vary depending on the specific cause of the issue, but it may range from a couple of hundred dollars for minor repairs to over a thousand dollars for more complex problems.

8. Q: Can I prevent OBDII code C1428 related to Actuator Pump Motor Circuit Malfunction in my Lexus?

A: Regular maintenance of the ABS system, checking for any signs of leaks or damage, and addressing any warning lights promptly can help prevent issues that lead to this code.

9. Q: How long does it typically take to repair OBDII code C1428 in a Lexus for Actuator Pump Motor Circuit Malfunction?

A: The repair time can vary depending on the specific issue, but it may take a few hours to a full day for diagnosis and repair.

10. Q: Are there any safety concerns associated with OBDII code C1428 indicating Actuator Pump Motor Circuit Malfunction in a Lexus?

A: Yes, this code can impact the functionality of the ABS system, which is crucial for safe braking performance, so it is important to address the issue promptly to ensure vehicle safety.

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