B1219 Code Meaning, Symptoms, Causes, & How to Fix

The B1219 code indicates a problem with the interior boot/trunk release switch circuit. This issue can be caused by a faulty switch, damaged wiring harness, or loose electrical connection.

Symptoms may include the illumination of the engine light or service engine soon warning light, signaling a malfunction in the trunk release system.

To resolve this issue, it is recommended to seek assistance from a professional who can accurately diagnose and repair the problem, ensuring the safety and proper functioning of the vehicle.

B1219 Code Meaning, Symptoms, Causes, & How to Fix

What does it mean

The B1219 code indicates a malfunction in the trunk release switch circuit. This malfunction can potentially prevent the trunk from opening in emergencies or when quick access is needed. It’s important to consult a professional for diagnosis and repair.

To prevent unintentional openings, it may be necessary to temporarily disable the trunk release system.

What are the symptoms

The symptoms of the B1219 code may include the Engine Light or Service Engine Soon Warning Light turning on. This indicates a problem with the trunk release system monitored by the Liftgate/Trunk Module (LTM).

The trunk may not open or close properly, and it may not respond when the interior trunk release switch is pressed. Other signs of a problem with the trunk release switch include the button not working, the trunk not opening or closing when commanded, or the trunk opening or closing unexpectedly.

These issues can be inconvenient and frustrating for the vehicle owner, as they may have difficulty accessing the trunk and loading or unloading items. It is important to address these symptoms promptly to ensure the proper functioning of the trunk release system and to prevent further damage.

Professional diagnosis and repair are recommended to accurately identify and resolve the issue.

What are the causes

The B1219 code can be caused by various factors. These include a faulty interior boot/trunk release switch, a problem with the switch harness (such as it being open or shorted), a poor electrical connection in the switch circuit, or a malfunctioning liftgate/trunk module (LTM).

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It is important to consider these potential causes when diagnosing the B1219 code to ensure an accurate and effective repair.

Here are some common mistakes to avoid during diagnosis:

  1. Failing to check the interior boot/trunk release switch to see if it is functioning properly before replacing other components.
  2. Not considering the possibility of a poor electrical connection in the switch circuit, which can cause intermittent problems.
  3. Neglecting to inspect the wiring harness and connectors for any damage or wear that may be affecting the switch’s functionality.
  4. Overlooking the liftgate/trunk module (LTM) as a potential cause of the B1219 code. The LTM is important for monitoring the interior boot/trunk release switch.

What Tools are Needed to diagnose

To diagnose the B1219 code, you will need specific tools to accurately assess the vehicle’s trunk release system. Here are the commonly used diagnostic tools for the B1219 code:

  1. OBD-II Scanner: This tool connects to the vehicle’s onboard diagnostic system and retrieves trouble codes, including the B1219 code, to help identify the issue.
  2. Digital Multimeter: This tool measures voltage, resistance, and continuity in the wiring and connectors of the trunk release system. It helps detect any open or short circuits.
  3. Wiring Diagrams: These diagrams provide a visual representation of the trunk release system’s wiring and connector layout. They are crucial for tracing the wiring and identifying potential issues.
  4. Inspection Light: This tool provides extra illumination during a thorough inspection for wiring and connector problems. It helps identify any damage, corrosion, or loose connections that may cause the B1219 code.

To perform a comprehensive inspection for wiring and connector issues, follow these steps:

  1. Visually inspect the wiring harness and connectors for any signs of damage or wear.
  2. Check for broken, bent, pushed out, or corroded connector pins. Ensure that all connections are tight and secure.
  3. Use a digital multimeter to test the wiring and connectors for continuity and proper voltage levels.
  4. Based on your findings, repair or replace any damaged or faulty wiring and connectors.
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How to fix Step by Step

Step 1: Begin the troubleshooting process for the B1219 code by checking the possible causes, which include a faulty interior boot/trunk release switch, an open or shorted switch harness, poor electrical connection in the switch circuit, or a faulty liftgate/trunk module (LTM).

Step 2: Visually inspect the wiring harness and connectors to identify any damaged components. Look for broken, bent, pushed out, or corroded connector pins.

Step 3: Based on your findings from the visual inspection, perform necessary repairs or replacements to address any damaged components.

Step 4: Make sure to check for any safety recalls related to the trunk release system. It’s important to address any recalls before proceeding with the troubleshooting process.

Step 5: Gather any additional technical information that may be needed during the troubleshooting process. This can help ensure a proper diagnosis and repair of the malfunctioning trunk release system.

Following this step-by-step guide will help you fix the B1219 code and resolve the issue with the trunk release system.

What are the Common Diagnosis Mistakes

Common diagnosis mistakes can occur when diagnosing the B1219 code. One mistake is not considering potential problems with the electrical connections in the trunk release system. To avoid common diagnostic errors, you can follow these troubleshooting tips:

  1. Check the wiring harness and connectors: Look closely at the wiring harness and connectors for any signs of damage or corrosion. Make sure all connections are secure and properly plugged in.
  2. Test the interior boot/trunk release switch: Use a multimeter to check if the interior boot/trunk release switch is functioning correctly. Look for any shorts or open circuits that may be causing the B1219 code.
  3. Inspect the liftgate/trunk module (LTM): The LTM is responsible for monitoring the interior boot/trunk release switch. If the switch is not within factory specifications, it could indicate a problem with the trunk release system. Examine the LTM for any faults or malfunctions.
  4. Perform necessary repairs or replacements: Based on the results of the inspections and tests, make the necessary repairs or replacements to fix the B1219 code. This may involve repairing damaged wiring, replacing faulty components, or addressing any issues with the LTM.
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What is the Repair Cost

The repair cost for the B1219 code can vary depending on factors such as location, vehicle make and model, engine type, and labor rates.

Labor rates can range from $75 to $150 per hour, and the complexity of the repair and parts required can also impact the cost.

It is best to consult a professional for an accurate cost estimation.

Can I drive safely with this code?

Driving safely with the B1219 code is not recommended. This code indicates a malfunction in the trunk release system, which can lead to various symptoms and potentially affect the safety of the vehicle.

It is advisable to seek professional help to accurately diagnose and repair the issue for safe operation.

Wrapping Up: B1219 Code

The B1219 code indicates a malfunction in the interior boot/trunk release switch circuit. This can be caused by a faulty switch, wiring issues, or poor electrical connections.

Symptoms may include an illuminated engine light or service engine soon warning light.

It is important to consult a professional for an accurate diagnosis and repair to ensure the proper functioning of the trunk release system.

Safety recalls should also be checked and additional technical information may be required.

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