OBD Guide
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B1624

Lamp Keypad Output Open Circuit

B1624 is an OBD-II diagnostic trouble code meaning: Lamp Keypad Output Open Circuit. Common causes: broken wires in the harness, oxidized or damaged contacts. Estimated repair cost: $22–111.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Button backlight does not light up
  • Intermittent backlight operation
  • Error B1624 in DTC memory

Causes

  • Broken wires in the harness
  • Oxidized or damaged contacts
  • Backlight module malfunction
  • Problems with the control relay
  • Short circuit in the circuit

How to Fix

  1. Check the backlight circuit fuse
  2. Visually inspect the wiring harness for damage.
  3. Check connector contacts for oxidation
  4. Test the functionality of the backlight module
  5. Check the continuity of the circuit with a multimeter

Related codes

B1625B1626

FAQ

What does the B1624 code mean?

B1624 is an OBD-II diagnostic trouble code that indicates: Lamp Keypad Output Open Circuit

What causes a B1624 error code?

The most common causes of B1624 include: Broken wires in the harness; Oxidized or damaged contacts; Backlight module malfunction; Problems with the control relay.

How do I fix a B1624 diagnostic trouble code?

To fix B1624: Check the backlight circuit fuse. Visually inspect the wiring harness for damage.. Check connector contacts for oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1624?

Yes, but get it checked soon

How much does it cost to fix B1624?

The estimated repair cost for B1624 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat