AutoCodes – Toyota – C1534 Toyota

C1534 Toyota Code - Power Steering EEPROM Malfunction

Quick Answer

The Power Steering ECU monitors itself for proper operation. Common causes include Faulty Power Steering ECU, Power Steering ECU harness is open or shorted, Power Steering 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: C1534 Toyota indicates Power Steering EEPROM Malfunction.
Common causes: Common causes include Faulty Power Steering ECU, Power Steering ECU harness is open or shorted, Power Steering 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 3,466

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 31, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1534 Toyota Description

The Power Steering ECU monitors itself for proper operation. The Power Steering ECU sets the Diagnostic Trouble Code (DTC) when it detects an internal malfunction. If the Power Steering ECU Assembly stores this DTC, it will shut off the motor relay circuit (built into the Power Steering ECU Assembly) and stop power assist. However, power assist continues if this DTC is output.

OBDII Code C1534 Toyota - Power Steering EEPROM Malfunction - AutoCodes.com — C1534 Toyota Code - Power Steering EEPROM Malfunction

What does this mean?

What are the Possible Causes of the DTC C1534 Toyota?

Faulty Power Steering ECU
Power Steering ECU harness is open or shorted
Power Steering ECU circuit poor electrical connection

How to Fix the DTC C1534 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 C1534 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 C1534 Toyota code?

Need more information on how to fix the C1534 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1534 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

C1534 2013 Toyota RAV4 — Power Steering EEPROM Malfunction
C1534 2014 Toyota RAV4 — Power Steering EEPROM Malfunction
C1534 2015 Toyota RAV4 — Power Steering EEPROM Malfunction
C1534 2016 Toyota RAV4 — Power Steering EEPROM Malfunction
C1534 2017 Toyota RAV4 — Power Steering EEPROM Malfunction
C1534 2018 Toyota RAV4 — Power Steering EEPROM 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 C1534 Toyota Code

1. What does the OBDII code C1534 mean on a Toyota?

C1534 indicates a Power Steering EEPROM Malfunction, meaning thereâ€™s an issue with the memory in the power steering control module.

2. What are the common symptoms of code C1534 in a Toyota?

Typical symptoms include illuminated warning lights on the dashboard, reduced or no power steering assist, and difficulty steering at low speeds.

3. What causes the C1534 Power Steering EEPROM Malfunction code?

This code is usually caused by a corrupted EEPROM in the power steering ECU, electrical issues like damaged wiring or connectors, or a faulty power steering control module.

4. Can I still drive my Toyota with a C1534 code?

While you can drive the vehicle, steering may be more difficult, especially at lower speeds. Itâ€™s recommended to address the issue promptly for safety.

5. How is the C1534 code diagnosed?

A technician will use a scan tool to verify the code, inspect the wiring and connectors, and test the power steering ECU for proper operation.

6. Can I fix the C1534 code myself?

If the issue is due to loose or corroded wiring, you may be able to fix it. However, EEPROM or ECU-related problems typically require professional repair or replacement.

7. How much does it cost to repair the C1534 code on a Toyota?

Repair costs vary depending on the cause. Replacing or reprogramming the power steering ECU may cost between $500 and $1,000, while fixing wiring issues could be less expensive.

8. Does the C1534 code require ECU replacement?

Not always. In some cases, reprogramming the ECU or addressing wiring issues may resolve the problem without needing a replacement.

9. Can a weak battery cause the C1534 code?

Yes, a weak or failing battery can cause voltage irregularities that might trigger the C1534 code. Ensure the battery is in good condition before troubleshooting further.

10. How can I prevent the C1534 code from occurring again?

Regular maintenance of the electrical system, including checking for damaged wiring and ensuring a stable power supply, can help prevent this issue.