OBD Guide
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B161B

Courtesy/Dome Lamp Control Circuit Low

B161B is an OBD-II diagnostic trouble code meaning: Courtesy/Dome Lamp Control Circuit Low. Common causes: open or short circuit in wiring harness, ceiling lamp malfunction. Estimated repair cost: $11–56.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • The interior light does not work
  • Flashing light
  • The lamp is not working correctly

Causes

  • Open or short circuit in wiring harness
  • Ceiling lamp malfunction
  • Body Control Module (BCM) Problems
  • Poor contact in connectors

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the operation of the lampshade
  3. Check contacts in connectors
  4. Check Body Control Module (BCM)

Related codes

B161AB161C

FAQ

What does the B161B code mean?

B161B is an OBD-II diagnostic trouble code that indicates: Courtesy/Dome Lamp Control Circuit Low

What causes a B161B error code?

The most common causes of B161B include: Open or short circuit in wiring harness; Ceiling lamp malfunction; Body Control Module (BCM) Problems; Poor contact in connectors.

How do I fix a B161B diagnostic trouble code?

To fix B161B: Check the integrity of the wiring harness. Check the operation of the lampshade. Check contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B161B?

Limited driving only, diagnose soon

How much does it cost to fix B161B?

The estimated repair cost for B161B is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat