B1736 – OBD-II DTC

OBD-II DTC B1736 – Mirror Driver Vertical Switch Circuit Short To Ground

DTC B1736 meaning

DTC B1736 refers to a diagnostic trouble code indicating a short circuit to ground in the driver’s vertical mirror switch circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components and systems for faults. The vertical switch is responsible for adjusting the mirror’s up and down position, and a short to ground can disrupt its functionality.

DTC B1736 symptoms

Common symptoms associated with DTC B1736 may include:

• The driver’s side mirror not adjusting vertically.
• Inoperative mirror controls.
• Other electrical issues in the vehicle, such as blown fuses.
• Warning lights on the dashboard related to the mirror or electrical system.

DTC B1736 causes

Several factors can lead to the occurrence of DTC B1736, including:

• A damaged or frayed wire in the mirror switch circuit.
• A faulty mirror switch itself.
• Corrosion or poor connections in the wiring harness.
• Short circuits caused by moisture or debris in the switch assembly.

DTC B1736 seriousness

The seriousness of DTC B1736 can vary. While it may not affect the vehicle’s overall performance, it can compromise safety by limiting the driver’s ability to adjust the mirror for optimal visibility. It is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC B1736

To diagnose DTC B1736, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1736 code.
2. Inspect the mirror switch and wiring for visible damage or corrosion.
3. Check for continuity in the wiring harness using a multimeter.
4. Test the mirror switch for proper operation.
5. Look for any additional trouble codes that may indicate related issues.

How to fix DTC B1736 step-by-step instructions

To fix DTC B1736, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Remove the mirror switch from the vehicle.
3. Inspect the wiring harness for any signs of damage, fraying, or corrosion.
4. If damage is found, repair or replace the affected wiring.
5. Test the mirror switch with a multimeter to ensure it is functioning correctly.
6. If the switch is faulty, replace it with a new one.
7. Reconnect the wiring harness and reinstall the mirror switch.
8. Reconnect the vehicle’s battery.
9. Clear the DTC using an OBD-II scanner and test the mirror functionality.

How to erase DTC B1736

To erase DTC B1736, 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 trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to ensure the code does not return.