B1769 – OBD-II DTC

OBD-II DTC B1769 – Seat Driver Backward Circuit Failure

DTC B1769 meaning

DTC B1769 refers to a diagnostic trouble code indicating a failure in the seat driver’s backward circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components and systems for faults. The backward circuit is responsible for controlling the movement of the driver’s seat when adjusting its position backward. A failure in this circuit can prevent the seat from moving as intended.

DTC B1769 symptoms

Common symptoms associated with DTC B1769 may include:

• Driver’s seat not moving backward
• Intermittent or complete loss of seat adjustment functionality
• Warning lights illuminated on the dashboard
• Unusual noises when attempting to adjust the seat

DTC B1769 causes

Several factors can lead to the occurrence of DTC B1769, including:

• Faulty seat motor
• Damaged wiring or connectors in the seat adjustment circuit
• Malfunctioning seat position switch
• Issues with the vehicle’s body control module (BCM)
• Corrosion or dirt in electrical connections

DTC B1769 seriousness

The seriousness of DTC B1769 can vary. While it may not pose an immediate safety risk, it can affect the driver’s comfort and ability to adjust the seat properly. In some cases, it may indicate underlying electrical issues that could lead to further problems if not addressed. Therefore, it is advisable to diagnose and repair the issue promptly.

How to diagnose DTC B1769

To diagnose DTC B1769, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1769 code.
2. Inspect the seat adjustment switch for any visible damage or wear.
3. Check the wiring and connectors for signs of corrosion or disconnection.
4. Test the seat motor for functionality using a multimeter.
5. Examine the body control module for any fault codes or issues.
6. Clear the code and perform a seat adjustment test to see if the issue persists.

How to fix DTC B1769 step-by-step instructions

To fix DTC B1769, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Inspect and repair any damaged wiring or connectors in the seat adjustment circuit.
3. Replace the seat adjustment switch if it is found to be faulty.
4. Test and replace the seat motor if it is not functioning correctly.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the seat adjustment functionality to ensure the issue is resolved.

How to erase DTC B1769

To erase DTC B1769, 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 “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to erase the trouble codes.
5. Disconnect the scanner and start the vehicle to check if the code reappears.

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