B1626 – OBD-II DTC

OBD-II DTC B1626 – Lamp Keypad Output Short Circuit To Ground

DTC B1626 meaning

DTC B1626 refers to a diagnostic trouble code indicating a short circuit to ground in the lamp keypad output circuit. This code is typically associated with the vehicle’s body control module (BCM) and indicates that there is an electrical fault affecting the operation of the lamp keypad, which is responsible for controlling various lighting functions in the vehicle.

DTC B1626 symptoms

Common symptoms associated with DTC B1626 may include:

• Inoperative or malfunctioning interior lights
• Dashboard warning lights illuminated
• Non-responsive lamp keypad
• Erratic behavior of lighting systems

DTC B1626 causes

Several factors can lead to the occurrence of DTC B1626, including:

• Wiring issues such as frayed or damaged wires
• Corrosion or poor connections in the lamp keypad circuit
• Faulty lamp keypad or BCM
• Short circuits caused by aftermarket modifications or installations

DTC B1626 seriousness

The seriousness of DTC B1626 can vary. While it may not immediately affect the drivability of the vehicle, it can lead to safety concerns due to malfunctioning lights. It is advisable to address this issue promptly to ensure proper lighting functionality and avoid potential hazards.

How to diagnose DTC B1626

To diagnose DTC B1626, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the wiring and connectors related to the lamp keypad for any visible damage or corrosion.
3. Check for continuity in the lamp keypad output circuit.
4. Test the lamp keypad and BCM for proper operation.
5. Look for any additional DTCs that may provide further insight into the issue.

How to fix DTC B1626 step-by-step instructions

To fix DTC B1626, follow these steps:

1. Repair or replace any damaged wiring or connectors found during the diagnosis.
2. Clean any corroded connections to ensure good electrical contact.
3. Replace the lamp keypad if it is determined to be faulty.
4. Replace the BCM if it is found to be malfunctioning.
5. Clear the DTC using an OBD-II scanner and test the system to ensure the issue is resolved.

How to erase DTC B1626

To erase DTC B1626, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Access the trouble codes menu on the scanner.
3. Select the option to clear or erase codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and perform a test drive to ensure the code does not reappear.

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