B1625 – OBD-II DTC

OBD-II DTC B1625 – Lamp Keypad Output Short Circuit To Battery

DTC B1625 meaning

DTC B1625 refers to a diagnostic trouble code indicating a short circuit in the lamp keypad output circuit to the battery. 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 B1625 symptoms

Common symptoms associated with DTC B1625 may include:

• Inoperative or malfunctioning interior lights
• Dashboard warning lights illuminated
• Non-responsive lamp keypad
• Unexpected behavior of exterior lights

DTC B1625 causes

The causes of DTC B1625 can vary, but typical reasons include:

• Short circuit in the wiring harness
• Faulty lamp keypad or switch
• Corroded or damaged connectors
• Defective body control module (BCM)

DTC B1625 seriousness

DTC B1625 is considered a moderate to serious issue. While it may not immediately affect the drivability of the vehicle, it can lead to safety concerns due to malfunctioning lights. Addressing this code promptly is important to ensure proper vehicle lighting and functionality.

How to diagnose DTC B1625

To diagnose DTC B1625, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the lamp keypad and associated wiring for visible damage or corrosion.
3. Check the connectors for proper seating and signs of wear.
4. Test the lamp keypad for proper operation using a multimeter.
5. Examine the body control module for faults or issues.
6. Perform a continuity test on the wiring harness to check for shorts.

How to fix DTC B1625 step-by-step instructions

To fix DTC B1625, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety.
2. Inspect and repair any damaged wiring or connectors in the lamp keypad circuit.
3. Replace the lamp keypad if it is found to be faulty.
4. Check and, if necessary, replace the body control module.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the lamp keypad and lighting functions to ensure proper operation.

How to erase DTC B1625

To erase DTC B1625, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the DTC menu on the scanner.
4. Select the option to clear or erase trouble codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to verify that the code does not return.

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