B1654 – OBD-II DTC

OBD-II DTC B1654 – Seat Driver Recline Backward Circuit Short To Ground

DTC B1654 meaning

DTC B1654 refers to a diagnostic trouble code indicating a short circuit to ground in the seat driver recline backward circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components and systems for faults. When the system detects an abnormal condition in the seat recline mechanism, it triggers this code to alert the technician of a potential issue.

DTC B1654 symptoms

Common symptoms associated with DTC B1654 may include:

• Inability to adjust the driver’s seat recline backward
• Warning lights illuminated on the dashboard
• Unusual noises from the seat adjustment mechanism
• Intermittent or complete loss of power to the seat adjustment controls

DTC B1654 causes

Several factors can lead to the occurrence of DTC B1654, including:

• Damaged wiring or connectors in the seat recline circuit
• Faulty seat recline motor
• Corrosion or poor connections in the electrical system
• Short circuits caused by frayed wires or improper installation
• Malfunctioning seat control module

DTC B1654 seriousness

The seriousness of DTC B1654 can vary based on the specific vehicle and the extent of the issue. However, it is generally considered a moderate concern because:

• It affects the functionality of the driver’s seat, which is crucial for safe driving.
• Ignoring the issue may lead to further electrical problems or damage to the seat adjustment system.
• It may indicate underlying issues that could affect other electrical components in the vehicle.

How to diagnose DTC B1654

To diagnose DTC B1654, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1654 code.
2. Inspect the wiring and connectors related to the seat recline circuit for any visible damage or corrosion.
3. Check the seat recline motor for proper operation by applying direct power to it.
4. Test the seat control module for faults or malfunctions.
5. Perform continuity tests on the wiring to ensure there are no shorts to ground.

How to fix DTC B1654 step-by-step instructions

To fix DTC B1654, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors in the seat recline circuit.
3. If the seat recline motor is faulty, replace it with a new or refurbished unit.
4. Clean any corroded connections and ensure all connectors are securely attached.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the seat recline function to ensure it operates correctly.

How to erase DTC B1654

To erase DTC B1654, 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 option to clear or erase trouble codes on the scanner.
4. Confirm the action to erase the DTC.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.