B1655 – OBD-II DTC

OBD-II DTC B1655 – Seat Driver Rear Up Circuit Failure

DTC B1655 meaning

DTC B1655 refers to a fault in the seat driver rear up circuit. This diagnostic trouble code indicates that the vehicle’s onboard diagnostic system has detected an issue with the electrical circuit responsible for controlling the upward movement of the rear seat. The code is specific to the seat adjustment system and may affect the functionality of the seat’s movement.

DTC B1655 symptoms

Common symptoms associated with DTC B1655 may include:

• The rear seat does not move upward when the adjustment switch is activated.
• Intermittent or complete failure of the seat adjustment feature.
• Warning lights or messages on the dashboard related to the seat system.
• Other seat functions may work while the rear up function is inoperative.

DTC B1655 causes

Several factors can lead to the occurrence of DTC B1655, including:

• Faulty seat adjustment switch.
• Damaged or frayed wiring in the seat adjustment circuit.
• Defective seat motor responsible for the upward movement.
• Issues with the vehicle’s body control module (BCM) or other related control modules.
• Corrosion or poor connections in the electrical connectors associated with the seat system.

DTC B1655 seriousness

DTC B1655 is generally considered a moderate issue. While it may not affect the vehicle’s overall drivability, it can impact passenger comfort and safety. If the seat cannot be adjusted properly, it may lead to improper seating positions, which can be a concern during driving. It is advisable to address this code promptly to ensure all seat functions operate correctly.

How to diagnose DTC B1655

To diagnose DTC B1655, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1655.
2. Inspect the seat adjustment switch for any visible damage or wear.
3. Check the wiring and connectors for signs of corrosion, fraying, 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. Perform continuity tests on the circuit to ensure proper electrical flow.

How to fix DTC B1655 step-by-step instructions

To fix DTC B1655, follow these steps:

1. Replace the seat adjustment switch if it is found to be faulty.
2. Repair or replace any damaged wiring or connectors in the seat adjustment circuit.
3. Replace the seat motor if it is not functioning correctly.
4. Reprogram or replace the body control module if it is determined to be defective.
5. Ensure all connections are secure and free from corrosion.
6. Clear the DTC using an OBD-II scanner and test the seat adjustment function.

How to erase DTC B1655

To erase DTC B1655, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Access the diagnostic menu on the scanner and select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the vehicle to check if the code reappears.

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