OBD Guide
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B16C3

Front Right Sidemarker Lamp Control Circuit

B16C3 is an OBD-II diagnostic trouble code meaning: Front Right Sidemarker Lamp Control Circuit. Common causes: open or shorted wiring harness, side lamp malfunction. Estimated repair cost: $6–56.

Severity
✅ Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–56 (est.)

Symptoms

  • The right front side light does not work
  • The right side light flashes or does not turn on
  • The lamp fault indicator lights up

Causes

  • Open or shorted wiring harness
  • Side lamp malfunction
  • Poor contact in the connector
  • Blown fuse
  • Body control module malfunction

How to Fix

  1. Check the serviceability of the side light lamp
  2. Inspect connectors and wires for damage
  3. Check the side light circuit fuse and relay.
  4. Check the voltage at the lamp connector
  5. If necessary, replace the lamp, wires or control module

Related codes

B16C4B16C2B16C1

FAQ

What does the B16C3 code mean?

B16C3 is an OBD-II diagnostic trouble code that indicates: Front Right Sidemarker Lamp Control Circuit

What causes a B16C3 error code?

The most common causes of B16C3 include: Open or shorted wiring harness; Side lamp malfunction; Poor contact in the connector; Blown fuse.

How do I fix a B16C3 diagnostic trouble code?

To fix B16C3: Check the serviceability of the side light lamp. Inspect connectors and wires for damage. Check the side light circuit fuse and relay.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B16C3?

Limited driving only, diagnose soon

How much does it cost to fix B16C3?

The estimated repair cost for B16C3 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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