OBD Guide
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B1E34

3rd Row Seat Right Backrest Switch Circuit Low

B1E34 is an OBD-II diagnostic trouble code meaning: 3rd Row Seat Right Backrest Switch Circuit Low. Common causes: open or short circuit in wiring harness, faulty seat back switch. 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 the backrest of the right third row seat
  • Backlight adjustment button light may not work
  • Error message on display

Causes

  • Open or short circuit in wiring harness
  • Faulty seat back switch
  • Oxidation or poor contact in the connector
  • Problems with the seat control unit

How to Fix

  1. Check wiring harness for damage
  2. Inspect the connectors of the switch and control unit
  3. Check the seat back switch with a multimeter
  4. If necessary, replace the switch or wiring harness
  5. Reset the error and check the system operation

Related codes

B1E33B1E35

FAQ

What does the B1E34 code mean?

B1E34 is an OBD-II diagnostic trouble code that indicates: 3rd Row Seat Right Backrest Switch Circuit Low

What causes a B1E34 error code?

The most common causes of B1E34 include: Open or short circuit in wiring harness; Faulty seat back switch; Oxidation or poor contact in the connector; Problems with the seat control unit.

How do I fix a B1E34 diagnostic trouble code?

To fix B1E34: Check wiring harness for damage. Inspect the connectors of the switch and control unit. Check the seat back switch with a multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1E34?

Do not drive — repair immediately

How much does it cost to fix B1E34?

The estimated repair cost for B1E34 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat