OBD Guide
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B1986

Drivers Seat Seatback Autoglide Rearward Switch Circuit Failure

B1986 is an OBD-II diagnostic trouble code meaning: Drivers Seat Seatback Autoglide Rearward Switch Circuit Failure. Common causes: open or short circuit in wiring harness, auto move switch malfunction. Estimated repair cost: $33–167.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • No response when trying to automatically move the seatback back
  • Error message on the instrument panel
  • Inability to save seat position settings

Causes

  • Open or short circuit in wiring harness
  • Auto move switch malfunction
  • Problems with the seat control module
  • Oxidation of contacts in connectors
  • Blown circuit fuse

How to Fix

  1. Check the condition of the fuses associated with the seat system
  2. Visually inspect the wiring harness for damage.
  3. Check resistance and voltage at switch
  4. Test the operation of the seat control module
  5. If necessary, replace the switch or repair the wiring harness

Related codes

B1985B1987B1990

FAQ

What does the B1986 code mean?

B1986 is an OBD-II diagnostic trouble code that indicates: Drivers Seat Seatback Autoglide Rearward Switch Circuit Failure

What causes a B1986 error code?

The most common causes of B1986 include: Open or short circuit in wiring harness; Auto move switch malfunction; Problems with the seat control module; Oxidation of contacts in connectors.

How do I fix a B1986 diagnostic trouble code?

To fix B1986: Check the condition of the fuses associated with the seat system. Visually inspect the wiring harness for damage.. Check resistance and voltage at switch. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1986?

Limited driving only, diagnose soon

How much does it cost to fix B1986?

The estimated repair cost for B1986 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat