B1552 — Decklid Release Circuit Open #

Note: The exact wording of this code description may vary depending on the vehicle manufacturer (OEM). Always consult your specific service manual for precise terminology.

• “Deck Lid Release Circuit Open” (General, Ford, GM, Toyota)
• “Trunk Lid Release Switch Open Circuit” (Honda, Acura)
• “Tailgate Release Switch Open” (Hyundai, Kia)
• “Boot Release Circuit Open” (Jaguar, Land Rover)

Summary of code B1552 #

The B1552 code indicates that the Engine Control Module (ECM) or Body Control Module (BCM) has detected an open circuit in the decklid (trunk) release system. In simple terms, an “open circuit” means there is a break or interruption in the electrical pathway that controls the trunk or tailgate release. This fault prevents the trunk from being opened electronically, either by a button, key fob, or interior switch. The code helps technicians pinpoint the area needing attention, which could range from a failed switch to a wiring problem. Prompt diagnosis is important, as this issue can affect both convenience and, on some vehicles, trunk security.

Frequent symptoms for code B1552 #

When the B1552 code is present, you may notice trouble accessing your trunk or tailgate. The electronic release mechanism typically stops functioning, though manual opening (if available) may still work. Sometimes, the trunk warning light may illuminate, or you might hear no “click” sound when pressing the release button. In rare cases, security features linked to the trunk (like alarm arming or valet mode) may be affected.

• Trunk/tailgate does not open using the button, key fob, or interior switch
• No sound or movement from the release actuator
• Trunk warning indicator illuminated on dashboard (if equipped)
• Security or valet functions may be disabled
• Manual release may still operate (vehicle dependent)

Probable causes for code B1552 (in order of likelihood) #

Several issues can trigger the B1552 code, most commonly linked to faults in the electrical circuit of the decklid release. The following are listed from most to least common:

1. Faulty decklid release switch (damaged button or contact failure)
2. Broken or damaged wiring (especially at trunk hinges or harness connectors)
3. Failed decklid release actuator (the electric motor or solenoid that pops the trunk)
4. Corroded or loose electrical connectors (at the switch, actuator, or control module)
5. Blown fuse (protecting the release circuit)
6. Faulty Body Control Module (BCM) (rare, but possible if all else checks out)

Step-by-step diagnosis for code B1552 #

Diagnosing B1552 involves systematically checking the release circuit and its components. Always follow safety precautions and disconnect the battery if working with electrical connectors.

• Step 1: Verify the code with a scan tool and clear it. Attempt to operate the trunk release. If the code returns, proceed.
• Step 2: Inspect the trunk/decklid release switch for physical damage or stickiness. Test for continuity with a multimeter.
• Step 3: Check the trunk release actuator for operation. Listen for any clicking or movement when activating the switch.
• Step 4: Inspect all visible wiring and connectors between the switch, actuator, and BCM. Pay special attention to areas prone to flexing (like trunk hinges).
• Step 5: Test for power and ground at the actuator connector when the switch is pressed. No voltage indicates a circuit break upstream.
• Step 6: Check the relevant fuse and replace if blown. Investigate why it blew (possible short).
• Step 7: If all components and wiring are functional, suspect a BCM fault and confirm with advanced diagnostic equipment or OEM procedures.

Possible fixes for code B1552 #

Once the cause is identified, repairs typically target the specific fault found. Most issues are resolved with straightforward parts replacement or minor wiring repairs.

• Replace a faulty decklid/trunk release switch
• Repair or replace broken or damaged wiring (especially around trunk hinge area)
• Replace the decklid release actuator if it fails to operate
• Clean or secure corroded/loose connectors
• Replace blown fuse (after identifying and correcting root cause)
• Replace or reprogram the BCM (rare; only after confirming with advanced diagnostics)

Is it safe to drive with code B1552? #

Yes, you can generally drive with code B1552 active. This fault does not affect the safety or drivability of your vehicle. However, you will lose the convenience of electronic trunk access, and, on some models, trunk security or alarm functions may be compromised. If your trunk contains important items or you rely on electronic release, address the issue promptly.

Vehicles most commonly affected by B1552 #

While B1552 is a generic Body code (used across many brands), it is most frequently observed on vehicles with electronic trunk or tailgate releases—especially sedans, hatchbacks, and SUVs from the following manufacturers:

• Ford (Fusion, Focus, Taurus, Mustang)
• General Motors (Chevrolet Malibu, Cruze, Impala)
• Toyota (Camry, Corolla, Avalon)
• Honda/Acura (Accord, Civic, TLX)
• Hyundai/Kia (Sonata, Elantra, Optima)
• Jaguar/Land Rover (XE, XF, Evoque)

Common mistakes & best practices for B1552 #

It’s easy to misdiagnose B1552 if you skip basic checks or rush to replace expensive components. Use these tips to avoid common pitfalls and save time.

• Don’t replace the actuator or BCM before checking the switch and wiring.
• Always verify fuse integrity first, but investigate the root cause if it’s blown.
• Inspect wiring at trunk hinges for pinching, breaks, or chafing—these are high-failure points.
• Use a multimeter to confirm circuit continuity and voltage before replacing parts.
• Document all steps taken and parts checked for future reference.

Quick FAQ for code B1552 #

Still have questions? Here are quick answers to the most common concerns about B1552.

• Q: Will this code cause my trunk to be stuck shut?
  A: In most cases, yes—the electronic release will not work. However, many vehicles have a manual release inside the trunk or on the key cylinder.
• Q: Can I just clear the code with a scan tool?
  A: Clearing the code will not fix the underlying issue. If the fault remains, the code will return as soon as you try to use the trunk release.