OBD Guide
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B1E31

3rd Row Seat Left Backrest Switch Stuck Rearward

B1E31 is an OBD-II diagnostic trouble code meaning: 3rd Row Seat Left Backrest Switch Stuck Rearward. Common causes: switch stuck or damaged, short circuit in control circuit. Estimated repair cost: $22–89.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • The seat back does not lock in an upright position
  • The indicator on the instrument panel does not go out
  • Electric seat back adjustment does not work

Causes

  • Switch stuck or damaged
  • Short circuit in control circuit
  • Broken or corroded wiring harness
  • Oxidation of switch contacts

How to Fix

  1. Checking the seat back switch for mechanical damage
  2. Diagnostics of the multimeter control circuit
  3. Replacing/cleaning the switch if necessary
  4. Repairing a damaged wiring harness

Related codes

B1D31B1E32B1E33

FAQ

What does the B1E31 code mean?

B1E31 is an OBD-II diagnostic trouble code that indicates: 3rd Row Seat Left Backrest Switch Stuck Rearward

What causes a B1E31 error code?

The most common causes of B1E31 include: Switch stuck or damaged; Short circuit in control circuit; Broken or corroded wiring harness; Oxidation of switch contacts.

How do I fix a B1E31 diagnostic trouble code?

To fix B1E31: Checking the seat back switch for mechanical damage. Diagnostics of the multimeter control circuit. Replacing/cleaning the switch if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1E31?

Limited driving only, diagnose soon

How much does it cost to fix B1E31?

The estimated repair cost for B1E31 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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