OBD Guide
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B1580

Dim Panel Increase Input Circuit Open

B1580 is an OBD-II diagnostic trouble code meaning: Dim Panel Increase Input Circuit Open. Common causes: broken or damaged wiring harness, dimming switch malfunction. Estimated repair cost: $22–89.

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

Symptoms

  • Adjusting the brightness of the instrument panel illumination does not work
  • Instrument panel lights do not turn on
  • Backlight flickering or uneven operation

Causes

  • Broken or damaged wiring harness
  • Dimming switch malfunction
  • Problems with the lighting control unit
  • Short circuit in the circuit
  • Oxidation of contacts

How to Fix

  1. Check the integrity of the wiring harness in the backlight control area
  2. Check the operation of the brightness control switch
  3. Diagnose the lighting control unit
  4. Clean contacts and connections
  5. Replace damaged components if necessary

Related codes

B1581B1582B1570

FAQ

What does the B1580 code mean?

B1580 is an OBD-II diagnostic trouble code that indicates: Dim Panel Increase Input Circuit Open

What causes a B1580 error code?

The most common causes of B1580 include: Broken or damaged wiring harness; Dimming switch malfunction; Problems with the lighting control unit; Short circuit in the circuit.

How do I fix a B1580 diagnostic trouble code?

To fix B1580: Check the integrity of the wiring harness in the backlight control area. Check the operation of the brightness control switch. Diagnose the lighting control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1580?

Limited driving only, diagnose soon

How much does it cost to fix B1580?

The estimated repair cost for B1580 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat