B1453 Tailgate Liftgate Boot Trunk Latch Position Switch Circuit Short to Battery or Open

OBD2 Code: B1453

Description: Tailgate/Liftgate/Boot/Trunk Latch Position Switch Circuit Short to Battery or Open

Definition: This code indicates that there is a short to battery voltage or an open circuit in the tailgate, liftgate, boot, or trunk latch position switch circuit. This can affect the operation of the latch mechanism and may prevent proper opening or closing of the vehicle’s rear access point.

B1453: Tailgate liftgate boot trunk latch position switch circuit short to battery or open

Severity: Moderate

Common Causes

B1453 – Tailgate Liftgate Boot Trunk Latch Position Switch Circuit Short to Battery or Open

Common Causes:

• Faulty tailgate latch position switch
• Short circuit in the wiring harness
• Open circuit in the wiring harness
• Poor electrical connection related to the tailgate latch position switch

Common Misdiagnosis

OBD2 Code: B1453

Description: Tailgate/Liftgate/Boot/Trunk Latch Position Switch Circuit Short to Battery or Open

Common Misdiagnosis: Replacing the latch assembly without checking for wiring issues or a faulty switch.

Common Diagnostic Steps

• Verify the code with an OBD2 scanner.
• Inspect the tailgate/liftgate latch and position switch for physical damage or corrosion.
• Check the wiring harness and connectors for signs of wear, damage, or disconnection.
• Test the voltage at the latch position switch circuit to ensure it is within specifications.
• Examine the fuse related to the tailgate/liftgate system and replace if necessary.
• Use a multimeter to check for continuity in the circuit between the switch and control module.
• If applicable, update or reprogram the vehicle’s control module software as per manufacturer guidelines.
• Replace any faulty components identified during diagnostics, such as switches or wiring.