AutoCodes – Generic – B1552

B1552 Code - Decklid Release Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Decklid Release Switch. Common causes include Faulty Decklid Release Switch, Decklid Release Switch harness is open or shorted, Decklid Release Switch 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 indicates Decklid Release Circuit Open.
Common causes: Common causes include Faulty Decklid Release Switch, Decklid Release Switch harness is open or shorted, Decklid Release Switch 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 8,418

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 02, 2019

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

The Body Control Module (BCM) monitors the Decklid Release Switch. The BCM sets the OBDII code when the Decklid Release Switch is not to factory specifications.

OBDII Code B1552 - Decklid Release Circuit Open - AutoCodes.com — B1552 Code - Decklid Release Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1552?

Faulty Decklid Release Switch
Decklid Release Switch harness is open or shorted
Decklid Release Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1552?

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 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 B1552 code?

Need more information on how to fix the B1552 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1552 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1552 Lexus — Extension Module Malfunction
B1552 Toyota — Extension Module 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 B1552 Code

1. What are the common symptoms of OBDII code B1552 - Decklid Release Circuit Open?

- Common symptoms include the decklid (trunk) not opening when the release button is pressed, the trunk opening intermittently, or the trunk releasing on its own.

2. What are the possible causes of the Decklid Release Circuit Open code B1552?

- Possible causes include a faulty decklid release switch, damaged wiring harness, blown fuse, faulty trunk release actuator, or a problem with the body control module.

3. How can I diagnose the cause of OBDII code B1552 - Decklid Release Circuit Open?

- You can start by checking the decklid release switch for proper operation, inspecting the wiring for any visible damage, testing the fuse related to the trunk release circuit, and scanning the body control module for error codes.

4. What should I do if my trunk won't open due to OBDII code B1552?

- If your trunk won't open, you can try using the manual release lever inside the trunk to access the trunk area and inspect the components for any visible issues before attempting repairs.

5. Can OBDII code B1552 - Decklid Release Circuit Open be repaired at home?

- Depending on the underlying cause, some DIY repairs may be possible, such as replacing a faulty switch or fuse. However, more complex issues may require professional diagnosis and repair.

6. Is it safe to continue driving with OBDII code B1552 active?

- While driving with the code may not directly affect vehicle performance, it is recommended to address the issue promptly to ensure the trunk can be opened in case of emergency or to access essential items stored in the trunk.

7. How much does it typically cost to repair OBDII code B1552 - Decklid Release Circuit Open?

- The cost of repair can vary depending on the specific cause of the issue. Simple repairs like replacing a switch or fuse may cost less, while more complex issues involving wiring or module replacement can be more expensive.

8. Will resetting the OBDII code B1552 clear the trunk release problem?

- Resetting the code may temporarily clear the error message, but it will not fix the underlying issue causing the decklid release problem. It's crucial to diagnose and repair the root cause to resolve the trunk release issue permanently.

9. Can extreme weather conditions trigger OBDII code B1552 - Decklid Release Circuit Open?

- Yes, extreme temperatures or moisture can sometimes affect electrical components, leading to issues like a decklid release circuit open fault. Ensuring proper weather sealing and maintaining components can help prevent such problems.

10. Are there any preventive maintenance tips to prevent OBDII code B1552 from occurring?

- Regularly inspecting the trunk release system components, keeping the trunk area clean and dry, avoiding excessive force when closing the trunk, and addressing any issues promptly can help prevent the occurrence of code B1552.