AutoCodes – Toyota – C1551 2016 Toyota RAV4

C1551 2016 Toyota RAV4 Code - Power Supply Voltage Malfunction

Quick Answer

The Power Steering ECU monitors itself for proper operation. 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: C1551 2016 Toyota RAV4 indicates Power Supply Voltage Malfunction.
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 222

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
Cost to Diagnose
FAQs
Comments
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Code C1551 2016 Toyota RAV4 Description

The Power Steering ECU monitors itself for proper operation. The Power Steering ECU sets the OBDII code when it detects an internal malfunction. The Power Steering ECU distinguishes the ignition switch status as ON or OFF through the IG power source circuit. The Diagnostic Trouble Code (DTC) will be set when an IG power source circuit malfunctions inside ECU.

OBDII Code C1551 2016 Toyota RAV4 - Power Supply Voltage Malfunction - AutoCodes.com — C1551 2016 Toyota RAV4 Code - Power Supply Voltage Malfunction

What does this mean?

What are the Possible Causes of the DTC C1551 2016 Toyota RAV4?

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 C1551 2016 Toyota RAV4?

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 C1551 2016 Toyota RAV4 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 C1551 2016 Toyota RAV4 code?

Need more information on how to fix the C1551 2016 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the 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 C1551 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code C1551 in a 2016 Toyota RAV4?

- Common symptoms include dashboard warning lights illuminated, loss of power steering assist, and potentially stalling of the vehicle.

2. What does the OBDII code C1551 indicate in a 2016 Toyota RAV4?

- OBDII code C1551 in a 2016 Toyota RAV4 indicates a power supply voltage malfunction within the electric power steering system.

3. What are the possible causes of OBDII code C1551 in a 2016 Toyota RAV4?

- Potential causes include a faulty electric power steering control module, wiring issues, poor electrical connections, or a weak battery.

4. How can I diagnose the power supply voltage malfunction related to OBDII code C1551 in my 2016 Toyota RAV4?

- Diagnosing the issue typically involves checking the battery voltage, inspecting the power steering control module, and testing the electrical connections for proper continuity.

5. Can I continue to drive my 2016 Toyota RAV4 with OBDII code C1551 present?

- It is not recommended to continue driving the vehicle with OBDII code C1551 as it may lead to loss of power steering functionality, posing a safety risk.

6. How can I reset the OBDII code C1551 in my 2016 Toyota RAV4?

- Resetting the code typically involves using an OBDII scanner to clear the code after addressing the underlying power supply voltage malfunction issue.

7. Is it safe to attempt repairs for OBDII code C1551 in a 2016 Toyota RAV4 without professional help?

- While basic checks like inspecting wiring connections can be done, diagnosing and repairing the power supply voltage malfunction issue may require professional expertise.

8. Will replacing the battery fix OBDII code C1551 in my 2016 Toyota RAV4?

- While a weak battery can contribute to the power supply voltage malfunction, it is not guaranteed to be the sole solution. Proper diagnosis is recommended.

9. How much does it typically cost to repair OBDII code C1551 in a 2016 Toyota RAV4?

- Repair costs can vary depending on the exact cause of the issue, but expect expenses for parts and labor to address the power supply voltage malfunction.

10. Can extreme weather conditions affect the occurrence of OBDII code C1551 in a 2016 Toyota RAV4?

- Extreme weather conditions can potentially impact the electrical components associated with the power supply voltage, leading to the manifestation of the code.