AutoCodes – Toyota – C1552 Toyota

C1552 Toyota Code - Power Source circuit Malfunction Inside Power Steering ECU

Quick Answer

When a problem occurs in the power steering system, the power source relay circuit is shut off to stop the power assist. Common causes include Power Steering ECU Fuse, Faulty Power Steering ECU, Power Steering ECU harness is open or shorted. 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: C1552 Toyota indicates Power Source circuit Malfunction Inside Power Steering ECU.
Common causes: Common causes include Power Steering ECU Fuse, Faulty Power Steering ECU, Power Steering ECU harness is open or shorted.
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 14,300

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 Feb 22, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C1552 Toyota Description

When a problem occurs in the power steering system, the power source relay circuit is shut off to stop the power assist. The Power Steering ECU monitors the Power Supply Voltage. The Power Steering ECU sets the OBDII code when the Power Supply Voltage is not to factory specifications.

OBDII Code C1552 Toyota - Power Source circuit Malfunction Inside Power Steering ECU - AutoCodes.com — C1552 Toyota Code - Power Source circuit Malfunction Inside Power Steering ECU

What does this mean?

What are the Possible Causes of the DTC C1552 Toyota?

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

How to Fix the DTC C1552 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 does this mean?

Code Tech Notes

In some vehicles, it is necessary to replace the Power Steering ECU when there is a problem in the power relay because each relay is built into the Power Steering ECU.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1552 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 C1552 Toyota code?

Need more information on how to fix the C1552 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1552 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

C1552 2013 Toyota RAV4 — Power Source circuit Malfunction Inside Power Steering ECU
C1552 2014 Toyota RAV4 — Power Source circuit Malfunction Inside Power Steering ECU
C1552 2015 Toyota RAV4 — Power Source circuit Malfunction Inside Power Steering ECU
C1552 2016 Toyota RAV4 — Power Source circuit Malfunction Inside Power Steering ECU
C1552 2017 Toyota RAV4 — Power Source circuit Malfunction Inside Power Steering ECU
C1552 2018 Toyota RAV4 — Power Source circuit Malfunction Inside Power Steering ECU

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 C1552 Toyota Code

1. What are common symptoms of OBDII code C1552 in a Toyota related to the Power Source circuit malfunction inside the Power Steering ECU?

The common symptoms include loss of power steering assist, illuminated power steering warning light on the dashboard, and difficulty steering the vehicle.

2. What could be the possible causes of OBDII code C1552 in a Toyota?

Possible causes include a faulty Power Steering ECU, damaged wiring or connectors in the Power Source circuit, low voltage in the vehicle's electrical system, or a malfunctioning power steering motor.

3. How can I diagnose the Power Source circuit malfunction inside the Power Steering ECU in a Toyota?

Diagnosis typically involves using a diagnostic scanner to retrieve the specific trouble code (C1552), testing the Power Steering ECU for proper functioning, inspecting the wiring and connectors for any damage, and checking the vehicle's battery and charging system for proper voltage levels.

4. Is it safe to continue driving a Toyota with OBDII code C1552 related to the Power Source circuit malfunction inside the Power Steering ECU?

It is not recommended to continue driving the vehicle with this code, as it may lead to sudden loss of power steering assist, making it difficult to steer the vehicle safely.

5. How can I repair OBDII code C1552 in a Toyota due to the Power Source circuit malfunction inside the Power Steering ECU?

Repairing this issue may involve replacing the Power Steering ECU, repairing or replacing damaged wiring or connectors, ensuring proper voltage supply to the system, and clearing the trouble code from the vehicle's system.

6. Can a DIY enthusiast fix OBDII code C1552 related to the Power Source circuit malfunction inside the Power Steering ECU in a Toyota?

While some basic checks like inspecting for loose connections or damaged wiring can be done by a DIY enthusiast, diagnosing and repairing this issue may require advanced diagnostic tools and expertise, so it is recommended to consult a professional mechanic.

7. How much does it typically cost to repair OBDII code C1552 in a Toyota caused by the Power Source circuit malfunction inside the Power Steering ECU?

The cost of repairing this issue can vary depending on the specific cause of the problem, the labor rates in your area, and whether any parts need to be replaced. It is advisable to get a diagnosis from a mechanic for an accurate cost estimate.

8. Are there any preventive maintenance tips to avoid encountering OBDII code C1552 in a Toyota related to the Power Source circuit malfunction inside the Power Steering ECU?

Regularly checking the power steering system for any signs of leaks, unusual noises, or warning lights, as well as ensuring the vehicle's electrical system is in good condition, can help prevent issues that may trigger this trouble code.

9. Can other OBDII codes be triggered along with C1552 in a Toyota due to the Power Source circuit malfunction inside the Power Steering ECU?

Depending on the root cause of the issue, additional codes related to the power steering system, electrical system, or communication faults may be triggered along with code C1552. It is important to diagnose and address all related codes to ensure a proper repair.

10. How long does it typically take to repair OBDII code C1552 in a Toyota caused by the Power Source circuit malfunction inside the Power Steering ECU?

The repair time can vary based on the complexity of the diagnosis and the extent of the repairs needed. It is best to consult with a qualified mechanic to get an estimate of the repair timeline for your specific situation.