B1607 – OBD-II DTC

OBD-II DTC B1607 – Illuminated Entry Input Circuit Failure

DTC B1607 meaning

DTC B1607 refers to an issue with the Illuminated Entry Input Circuit. This diagnostic trouble code indicates that the vehicle’s body control module (BCM) has detected a malfunction in the circuit responsible for the illuminated entry feature, which typically activates the interior lights when the vehicle is unlocked or opened.

DTC B1607 symptoms

Common symptoms associated with DTC B1607 may include:

• Interior lights not illuminating when doors are unlocked or opened
• Malfunctioning keyless entry system
• Inconsistent operation of door locks
• Other related electrical issues within the vehicle

DTC B1607 causes

Several factors can lead to the triggering of DTC B1607, including:

• Faulty door switches or sensors
• Wiring issues, such as shorts or open circuits
• Defective body control module (BCM)
• Corrosion or poor connections in the circuit
• Faulty key fob or remote entry system

DTC B1607 seriousness

The seriousness of DTC B1607 can vary. While it may not affect the vehicle’s drivability, it can lead to inconvenience due to non-functioning interior lights and keyless entry features. Ignoring this code may also lead to further electrical issues if the underlying problem is not addressed.

How to diagnose DTC B1607

To diagnose DTC B1607, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the vehicle’s wiring and connectors related to the illuminated entry system for damage or corrosion.
3. Test the door switches for proper operation.
4. Check the body control module for any faults or updates.
5. Perform continuity tests on the circuit to identify any breaks or shorts.

How to fix DTC B1607 step-by-step instructions

To fix DTC B1607, follow these steps:

1. Repair or replace any damaged wiring or connectors found during diagnosis.
2. Replace faulty door switches or sensors as needed.
3. If the BCM is determined to be faulty, consider reprogramming or replacing it.
4. Ensure all connections are clean and secure to prevent future issues.
5. Clear the DTC using an OBD-II scanner and test the system to ensure proper operation.

How to erase DTC B1607

To erase DTC B1607, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Access the trouble codes menu on the scanner.
4. Select the option to clear or erase 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 verify that the code does not reappear.

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