B1959 – OBD-II DTC

OBD-II DTC B1959 – Seat Recline Forward/Backward Potentiometer Feedback Circuit Open

DTC B1959 meaning

DTC B1959 refers to a diagnostic trouble code indicating an issue with the seat recline forward/backward potentiometer feedback circuit. This code is triggered when the vehicle’s onboard diagnostic system detects an open circuit in the feedback mechanism that monitors the position of the seat recline adjustment. The potentiometer is responsible for sending signals to the vehicle’s control module regarding the seat’s recline position, and an open circuit means that this information is not being transmitted correctly.

DTC B1959 symptoms

Common symptoms associated with DTC B1959 may include:

• Inability to adjust the seat recline position
• Warning lights illuminated on the dashboard
• Seat recline position may be stuck or unresponsive
• Possible related issues with other seat functions

DTC B1959 causes

Several factors can lead to the triggering of DTC B1959, including:

• Faulty potentiometer or seat recline switch
• Wiring issues such as frayed or broken wires
• Corrosion or poor connections in the feedback circuit
• Malfunctioning control module

DTC B1959 seriousness

The seriousness of DTC B1959 can vary. While it may not pose an immediate safety risk, it can lead to discomfort due to the inability to adjust the seat properly. Additionally, if left unaddressed, it may indicate underlying electrical issues that could affect other systems in the vehicle.

How to diagnose DTC B1959

To diagnose DTC B1959, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the seat recline potentiometer and switch for visible damage.
3. Check the wiring and connectors for signs of wear, corrosion, or disconnection.
4. Test the potentiometer with a multimeter to ensure it is functioning correctly.
5. Examine the vehicle’s control module for any faults or updates.

How to fix DTC B1959 step-by-step instructions

To fix DTC B1959, follow these steps:

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 feedback circuit.
3. If the potentiometer is faulty, replace it with a new one.
4. Reconnect all components and ensure all connections are secure.
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 B1959

To erase DTC B1959, 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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