AutoCodes – Toyota – B1552 Toyota

B1552 Toyota Code - Extension Module Malfunction

Quick Answer

The Diagnostic Trouble Code (DTC) is stored when a malfunction occurs in the Radio and Display Receiver Assembly. Common causes include Faulty Radio and Display Receiver Assembly, Radio and Display Receiver Assembly harness is open or shorted, Radio and Display Receiver Assembly 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: B1552 Toyota indicates Extension Module Malfunction.
Common causes: Common causes include Faulty Radio and Display Receiver Assembly, Radio and Display Receiver Assembly harness is open or shorted, Radio and Display Receiver Assembly 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 927

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 May 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1552 Toyota Description

The Diagnostic Trouble Code (DTC) is stored when a malfunction occurs in the Radio and Display Receiver Assembly.

OBDII Code B1552 Toyota - Extension Module Malfunction - AutoCodes.com — B1552 Toyota Code - Extension Module Malfunction

What does this mean?

What are the Possible Causes of the DTC B1552 Toyota?

Faulty Radio and Display Receiver Assembly
Radio and Display Receiver Assembly harness is open or shorted
Radio and Display Receiver Assembly circuit poor electrical connection

How to Fix the DTC B1552 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 B1552 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.

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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 B1552 Toyota Code

1. What are the common symptoms of OBDII code B1552 Toyota (Extension Module Malfunction)?

- Common symptoms include issues with the vehicle's power door locks, power windows, or other electronic features controlled by the extension module.

2. What are the possible causes of the B1552 code in a Toyota?

- The B1552 code is typically triggered by a malfunction in the extension module itself, wiring issues, or a faulty connection.

3. How can I diagnose the B1552 code in my Toyota?

- Diagnosis involves using a compatible OBDII scanner to retrieve the code, inspecting the extension module and its connections for any visible damage, and testing the wiring for continuity.

4. Can I still drive my Toyota with the B1552 code present?

- It is generally safe to drive the vehicle with the B1552 code, but it is recommended to address the issue promptly to avoid further electrical problems.

5. How can I repair the Extension Module Malfunction in my Toyota?

- Repair options may include repairing or replacing the extension module, repairing damaged wiring or connections, and clearing the code with an OBDII scanner.

6. Is it possible to reset the B1552 code without fixing the underlying issue?

- While you can clear the code with a scanner, it is not recommended as the issue may persist and lead to ongoing electrical problems.

7. Can a DIY enthusiast fix the B1552 code in a Toyota?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to address the issue by following repair procedures outlined in the vehicle's service manual.

8. How much does it cost to repair the Extension Module Malfunction in a Toyota?

- The cost of repair can vary depending on the extent of the issue, the need for replacement parts, and whether you choose to do the repair yourself or seek professional help.

9. Are there any preventive measures to avoid the B1552 code in a Toyota?

- Regularly inspecting the extension module, keeping electrical connections clean and secure, and addressing any electrical issues promptly can help prevent the B1552 code from occurring.

10. Will the B1552 code cause my Toyota to fail an emissions test?

- The B1552 code is not directly related to emissions, so it should not cause your Toyota to fail an emissions test. However, it is still important to address the issue for overall vehicle performance and safety.