OBD Guide
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B1709

Seat Driver Front Up Switch Circuit Failure

B1709 is an OBD-II diagnostic trouble code meaning: Seat Driver Front Up Switch Circuit Failure. Common causes: open or short circuit in switch circuit, seat lift switch malfunction. Estimated repair cost: $56–167.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Inability to adjust driver's seat height
  • Seat adjustment indicator flashing
  • Seat does not respond to switch commands

Causes

  • Open or short circuit in switch circuit
  • Seat lift switch malfunction
  • Wiring harness damage
  • Problems with the seat control unit

How to Fix

  1. Check the continuity of the switch circuit
  2. Test the seat lift switch
  3. Inspect the wiring harness for damage
  4. Check the operation of the seat control unit

Related codes

B1708B1710B1711

FAQ

What does the B1709 code mean?

B1709 is an OBD-II diagnostic trouble code that indicates: Seat Driver Front Up Switch Circuit Failure

What causes a B1709 error code?

The most common causes of B1709 include: Open or short circuit in switch circuit; Seat lift switch malfunction; Wiring harness damage; Problems with the seat control unit.

How do I fix a B1709 diagnostic trouble code?

To fix B1709: Check the continuity of the switch circuit. Test the seat lift switch. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1709?

Do not drive — repair immediately

How much does it cost to fix B1709?

The estimated repair cost for B1709 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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