OBD Guide
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B1586

Dim Panel Decrease Input Circuit Short To Ground

B1586 is an OBD-II diagnostic trouble code meaning: Dim Panel Decrease Input Circuit Short To Ground. Common causes: wiring harness damage, brightness control malfunction. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$33–111 (est.)

Symptoms

  • Dashboard backlight does not work
  • backlight flickering
  • Backlight brightness cannot be adjusted
  • problems with other elements connected to the same circuit

Causes

  • wiring harness damage
  • brightness control malfunction
  • short circuit in the wiring
  • problems with the control unit

How to Fix

  1. Check wiring harness for damage
  2. Check the brightness control for functionality
  3. Check circuit continuity
  4. Replace damaged items
  5. Clear error codes and check if B1586 returns

Related codes

B1585B1587

FAQ

What does the B1586 code mean?

B1586 is an OBD-II diagnostic trouble code that indicates: Dim Panel Decrease Input Circuit Short To Ground

What causes a B1586 error code?

The most common causes of B1586 include: wiring harness damage; brightness control malfunction; short circuit in the wiring; problems with the control unit.

How do I fix a B1586 diagnostic trouble code?

To fix B1586: Check wiring harness for damage. Check the brightness control for functionality. Check circuit continuity. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1586?

Do not drive — repair immediately

How much does it cost to fix B1586?

The estimated repair cost for B1586 is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat