B2601 – OBD-II DTC

OBD-II DTC B2601 – No Latch Signal Sensed on Closing and Door Reversed

DTC B2601 meaning

DTC B2601 refers to a diagnostic trouble code indicating that the vehicle’s body control module (BCM) has detected a “No Latch Signal Sensed” condition when the door is closed. This code typically arises when the BCM expects to receive a signal indicating that the door latch is engaged, but it does not receive this signal. Additionally, the code may indicate that the door’s position is reversed, meaning the door may not be closing properly or is misaligned.

DTC B2601 symptoms

Common symptoms associated with DTC B2601 may include:

• Inoperative door locks
• Door ajar warning light illuminated on the dashboard
• Interior lights remaining on when the door is closed
• Malfunctioning power windows or other door-related features

DTC B2601 causes

Several factors can lead to the occurrence of DTC B2601, including:

• Faulty door latch assembly
• Wiring issues, such as damaged or corroded connectors
• Defective body control module (BCM)
• Misalignment of the door or latch mechanism
• Faulty door switch

DTC B2601 seriousness

The seriousness of DTC B2601 can vary. While it may not immediately affect the vehicle’s drivability, it can lead to safety concerns, such as doors not locking properly or the interior lights draining the battery. It is advisable to address this code promptly to ensure the proper functioning of the vehicle’s door systems.

How to diagnose DTC B2601

To diagnose DTC B2601, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B2601 code.
2. Inspect the door latch assembly for any visible damage or misalignment.
3. Check the wiring and connectors related to the door latch and BCM for signs of wear or corrosion.
4. Test the door switch for proper operation.
5. Examine the BCM for any fault codes or issues.
6. Perform a continuity test on the wiring to ensure there are no breaks.

How to fix DTC B2601 step-by-step instructions

To fix DTC B2601, follow these step-by-step instructions:

1. Clear the DTC using an OBD-II scanner.
2. Inspect and repair any damaged wiring or connectors related to the door latch and BCM.
3. Replace the door latch assembly if it is found to be faulty.
4. Realign the door if it is misaligned, ensuring it closes properly.
5. Test the door switch and replace it if necessary.
6. Recheck for any new codes after repairs and ensure the original code does not return.

How to erase DTC B2601

To erase DTC B2601, 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 scanner’s menu and select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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