OBD Guide
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B2209

Interior Lamp Override Switch Open Circuit

B2209 is an OBD-II diagnostic trouble code meaning: Interior Lamp Override Switch Open Circuit. Common causes: broken wire in the harness, interior light switch malfunction. Estimated repair cost: $6–56.

Severity
✅ Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • Interior lighting does not work
  • The lamp does not turn on/off
  • Trunk light does not work

Causes

  • Broken wire in the harness
  • Interior light switch malfunction
  • Oxidation of contacts
  • Fuse problems
  • Body control module malfunction

How to Fix

  1. Check the interior lighting fuse
  2. Inspect the wiring harness for damage
  3. Check the switch for functionality
  4. Clean switch contacts
  5. Check connections to body control module

Related codes

B2208B2210

FAQ

What does the B2209 code mean?

B2209 is an OBD-II diagnostic trouble code that indicates: Interior Lamp Override Switch Open Circuit

What causes a B2209 error code?

The most common causes of B2209 include: Broken wire in the harness; Interior light switch malfunction; Oxidation of contacts; Fuse problems.

How do I fix a B2209 diagnostic trouble code?

To fix B2209: Check the interior lighting fuse. Inspect the wiring harness for damage. Check the switch for functionality. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2209?

Yes, but get it checked soon

How much does it cost to fix B2209?

The estimated repair cost for B2209 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat