B1496 – OBD-II DTC

OBD-II DTC B1496 – Decklid Punch-Out Sensor Open Circuit

DTC B1496 meaning

DTC B1496 refers to a diagnostic trouble code indicating an open circuit in the decklid punch-out sensor. This sensor is responsible for detecting the position of the decklid (trunk) and ensuring it is properly closed. An open circuit means that there is a break in the electrical connection, preventing the sensor from sending accurate signals to the vehicle’s onboard computer.

DTC B1496 symptoms

Common symptoms associated with DTC B1496 may include:

• Dashboard warning lights, particularly the trunk or door ajar light.
• Inconsistent or non-functioning trunk release mechanism.
• Failure of the vehicle’s security system to engage or disengage properly.
• Increased risk of trunk not being detected as closed, leading to potential safety issues.

DTC B1496 causes

Several factors can lead to the occurrence of DTC B1496, including:

• Faulty decklid punch-out sensor.
• Damaged wiring or connectors related to the sensor.
• Corrosion or dirt buildup at the sensor connection points.
• Issues with the vehicle’s body control module (BCM) that processes the sensor’s signals.

DTC B1496 seriousness

The seriousness of DTC B1496 can vary. While it may not immediately affect the drivability of the vehicle, it can lead to safety concerns, such as the trunk not being recognized as closed. This can result in the trunk opening while driving or the vehicle’s security system not functioning correctly, increasing the risk of theft or damage.

How to diagnose DTC B1496

To diagnose DTC B1496, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1496 code.
2. Inspect the decklid punch-out sensor for visible damage or disconnection.
3. Check the wiring and connectors for signs of wear, corrosion, or breaks.
4. Test the sensor’s resistance using a multimeter to ensure it is within specifications.
5. Examine the body control module for any faults or issues that may affect sensor operation.

How to fix DTC B1496 step-by-step instructions

To fix DTC B1496, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Inspect and repair or replace any damaged wiring or connectors associated with the decklid punch-out sensor.
3. If the sensor is faulty, remove it and install a new one according to the manufacturer’s specifications.
4. Reconnect all electrical connections and ensure they are secure and free of corrosion.
5. Reconnect the vehicle’s battery and clear the DTC using an OBD-II scanner.
6. Test the system by opening and closing the trunk to ensure the sensor is functioning correctly.

How to erase DTC B1496

To erase DTC B1496, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to indicate that the codes have been cleared.
6. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.