B1722 – OBD-II DTC

OBD-II DTC B1722 – Seat Driver Rearward Switch Circuit Open

DTC B1722 meaning

DTC B1722 refers to a diagnostic trouble code indicating an issue with the seat driver rearward switch circuit. This code is triggered when the vehicle’s onboard diagnostic system detects an open circuit in the switch that controls the rearward movement of the driver’s seat. The open circuit can prevent the seat from adjusting properly, affecting driver comfort and safety.

DTC B1722 symptoms

Common symptoms associated with DTC B1722 may include:

• Driver’s seat not moving rearward
• Inability to adjust the driver’s seat position
• Warning lights illuminated on the dashboard
• Possible related codes stored in the system

DTC B1722 causes

The causes of DTC B1722 can vary, but typical reasons include:

• Faulty seat driver rearward switch
• Damaged wiring or connectors in the switch circuit
• Corrosion or poor connections in the electrical system
• Issues with the seat control module

DTC B1722 seriousness

DTC B1722 is considered a moderate issue. While it may not immediately affect the vehicle’s drivability, it can compromise driver comfort and safety. If the driver’s seat cannot be adjusted properly, it may lead to an improper driving position, increasing the risk of accidents. Therefore, it is advisable to address this code promptly.

How to diagnose DTC B1722

To diagnose DTC B1722, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1722.
2. Inspect the seat driver rearward switch for visible damage or wear.
3. Check the wiring and connectors for continuity and signs of corrosion.
4. Test the seat driver rearward switch using a multimeter to ensure it operates correctly.
5. Examine the seat control module for any faults or issues.

How to fix DTC B1722 step-by-step instructions

To fix DTC B1722, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Remove the seat driver rearward switch from the seat assembly.
3. Inspect the switch for damage and replace it if necessary.
4. Check the wiring harness and connectors for any signs of damage or corrosion repair or replace as needed.
5. Reconnect the seat driver rearward switch and ensure all connections are secure.
6. Reconnect the vehicle’s battery.
7. Use an OBD-II scanner to clear the DTC and test the seat adjustment functionality.

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