OBD Guide
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B1588

Autolamp Delay Increase Circuit Open

B1588 is an OBD-II diagnostic trouble code meaning: Autolamp Delay Increase Circuit Open. Common causes: broken wires in the headlight delay control circuit, contact corrosion. Estimated repair cost: $22–111.

Severity
✅ Low
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$22–111 (est.)

Symptoms

  • No delay for turning off the headlights after the engine is turned off
  • Automatic headlights don't work
  • Fault indication on the instrument panel

Causes

  • Broken wires in the headlight delay control circuit
  • Contact corrosion
  • Headlight delay module malfunction
  • Problems with the relay or circuit fuse
  • Malfunction of the lighting control unit

How to Fix

  1. Check the headlight delay circuit fuse and relay
  2. Inspect the wiring harness for damage or breaks.
  3. Check contacts for oxidation or corrosion
  4. Test the headlight delay module for functionality
  5. If necessary, replace faulty components

Related codes

B1587B1589B1590

FAQ

What does the B1588 code mean?

B1588 is an OBD-II diagnostic trouble code that indicates: Autolamp Delay Increase Circuit Open

What causes a B1588 error code?

The most common causes of B1588 include: Broken wires in the headlight delay control circuit; Contact corrosion; Headlight delay module malfunction; Problems with the relay or circuit fuse.

How do I fix a B1588 diagnostic trouble code?

To fix B1588: Check the headlight delay circuit fuse and relay. Inspect the wiring harness for damage or breaks.. Check contacts for oxidation or corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1588?

Do not drive — repair immediately

How much does it cost to fix B1588?

The estimated repair cost for B1588 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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