B1652 – OBD-II DTC

OBD-II DTC B1652 – Seat Driver Recline Backward Circuit Open

DTC B1652 meaning

DTC B1652 refers to a diagnostic trouble code indicating an open circuit in the driver seat recline backward circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle systems for faults. The specific issue arises when the vehicle’s control module detects that the signal from the seat recline mechanism is not functioning as expected, suggesting a potential electrical fault or disconnection.

DTC B1652 symptoms

Common symptoms associated with DTC B1652 may include:

• Driver seat recline function not working
• Warning lights illuminated on the dashboard
• Inconsistent seat positioning
• Other seat adjustment functions may also be affected

DTC B1652 causes

Several factors can lead to the occurrence of DTC B1652, including:

• Open or damaged wiring in the seat recline circuit
• Faulty seat recline motor
• Defective seat position sensor
• Issues with the vehicle’s control module
• Corrosion or poor connections in the electrical connectors

DTC B1652 seriousness

The seriousness of DTC B1652 can vary. While it may not pose an immediate safety risk, it can affect the comfort and adjustability of the driver’s seat. If left unaddressed, it could lead to further electrical issues or complications with other seat functions. Therefore, it is advisable to diagnose and repair the issue promptly.

How to diagnose DTC B1652

To diagnose DTC B1652, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1652 code.
2. Inspect the wiring and connectors related to the driver seat recline circuit for any visible damage or disconnections.
3. Test the seat recline motor for proper operation using a multimeter.
4. Check the seat position sensor for functionality.
5. Examine the vehicle’s control module for any fault codes or issues.

How to fix DTC B1652 step-by-step instructions

To fix DTC B1652, 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 recline circuit.
3. If the seat recline motor is faulty, replace it with a new one.
4. Test and replace the seat position sensor if it is not functioning correctly.
5. Reconnect all components and the battery.
6. Clear the DTC using an OBD-II scanner and test the seat recline function to ensure it operates correctly.

How to erase DTC B1652

To erase DTC B1652, 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 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.

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