B2373 – OBD-II DTC

OBD-II DTC B2373 – LED #1 Circuit Short to Battery

DTC B2373 meaning

DTC B2373 refers to a diagnostic trouble code indicating a short circuit in the LED #1 circuit to battery. This code is typically associated with issues in the vehicle’s lighting system, particularly the LED lights that may be part of the vehicle’s exterior or interior lighting. The code suggests that the circuit is receiving an unintended voltage, which can lead to malfunctioning lights or other electrical issues.

DTC B2373 symptoms

Common symptoms associated with DTC B2373 may include:

• Illuminated warning lights on the dashboard
• Non-functioning LED lights
• Flickering or dimming of lights
• Inconsistent operation of lighting features
• Possible blown fuses related to the lighting system

DTC B2373 causes

Several factors can lead to the occurrence of DTC B2373, including:

• Wiring issues such as frayed or damaged wires
• Corrosion in connectors or terminals
• Faulty LED light assemblies
• Short circuits due to improper installation or modifications
• Defective control modules or sensors

DTC B2373 seriousness

The seriousness of DTC B2373 can vary based on the symptoms and the specific vehicle. However, it is generally considered a moderate issue. While it may not immediately affect the drivability of the vehicle, it can lead to safety concerns due to non-functioning lights, which are crucial for visibility and signaling to other drivers. Prompt attention is recommended to prevent further electrical issues.

How to diagnose DTC B2373

To diagnose DTC B2373, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the LED #1 circuit wiring for any visible damage or wear.
3. Check for corrosion or loose connections at the connectors.
4. Test the LED light assembly for proper operation.
5. Examine the vehicle’s fuse box for any blown fuses related to the lighting system.
6. Use a multimeter to check for voltage and continuity in the circuit.
7. Consult the vehicle’s service manual for specific circuit diagrams and specifications.

How to fix DTC B2373 step-by-step instructions

To fix DTC B2373, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect the wiring harness for any signs of damage, fraying, or shorts.
3. Repair or replace any damaged wiring as necessary.
4. Clean any corroded connectors and ensure they are securely connected.
5. Test the LED light assembly and replace it if it is found to be faulty.
6. Replace any blown fuses related to the lighting system.
7. Reconnect the battery and clear the DTC using an OBD-II scanner.
8. Test the lighting system to ensure proper operation.

How to erase DTC B2373

To erase DTC B2373, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s ignition without starting the engine.
3. Navigate to the DTC menu on the scanner.
4. Select the option to erase or clear the trouble codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to check if the code reappears.

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