B1955 – OBD-II DTC

OBD-II DTC B1955 – Seat Front Up/Down Potentiometer Feedback Circuit Open

DTC B1955 meaning

DTC B1955 refers to a diagnostic trouble code indicating an issue with the seat front up/down potentiometer feedback circuit. This code is triggered when the vehicle’s onboard diagnostic system detects an open circuit in the feedback mechanism that regulates the seat’s vertical movement. The potentiometer is responsible for sending position data to the vehicle’s control module, and any disruption in this feedback can lead to improper seat adjustments.

DTC B1955 symptoms

Common symptoms associated with DTC B1955 may include:

• Inability to adjust the front seat height.
• Seat adjustment controls may be unresponsive.
• Warning lights illuminated on the dashboard.
• Potential issues with other seat functions, such as lumbar support.

DTC B1955 causes

Several factors can lead to the triggering of DTC B1955, including:

• Faulty potentiometer or seat adjustment switch.
• Wiring issues, such as frayed or broken wires in the feedback circuit.
• Corrosion or poor connections in the electrical connectors.
• Malfunctioning control module that processes seat adjustment signals.

DTC B1955 seriousness

DTC B1955 is considered a moderate issue. While it may not affect the vehicle’s overall drivability, it can compromise the comfort and safety of the driver and passengers. Proper seat positioning is crucial for safe driving, and failure to address this code may lead to further electrical issues or complications with the seat adjustment system.

How to diagnose DTC B1955

To diagnose DTC B1955, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the seat adjustment switch and potentiometer 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 control module for any faults or error codes related to the seat adjustment system.

How to fix DTC B1955 step-by-step instructions

To fix DTC B1955, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Remove the seat adjustment switch and inspect it for damage or wear.
3. Check the potentiometer for proper operation using a multimeter.
4. Repair or replace any damaged wiring or connectors in the feedback circuit.
5. Reinstall the seat adjustment switch and reconnect the battery.
6. Clear the DTC using an OBD-II scanner and test the seat adjustment functionality.

How to erase DTC B1955

To erase DTC B1955, 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 clear the trouble codes from the vehicle’s memory.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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