Driver Seat Rearward Switch Circuit Open
The B1722 code indicates that the Driver Seat Module (DSM) has detected an open circuit in the rearward movement switch of the driver's seat. This means the switch signal is not reaching the module, preventing the seat from moving backward electrically.
1. Commonly Affected Makes
2. Most Common Causes
- Faulty driver seat adjustment switch (internal open circuit)
- Damaged, corroded, or disconnected wiring or connectors between the switch and the DSM
- Internal failure of the Driver Seat Module (DSM)
- Blown fuse in the power supply circuit for the switch or module
3. Symptoms You Will Notice
- Driver seat will not move rearward using power controls
- Other seat functions may still work, or the seat may be completely inoperative
4. Step-by-Step Diagnosis
Check for blown fuses related to the seat circuit and replace if necessary.
Inspect the rearward switch and its wiring for damage, corrosion, or loose connections.
Test the switch continuity with a multimeter; replace if open circuit is found.
If switch and wiring are okay, test for power and ground at the DSM connector; if missing, repair wiring. If present, the DSM may be faulty.
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive, but you will not be able to adjust the seat rearward electrically. Manual adjustment may still be possible depending on the vehicle.
How much does it cost to fix?▼
Repair costs typically range from $100 to $400, depending on whether the switch, wiring, or module needs replacement. Diagnostic fees are usually around $100.