OBD Guide
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B16E7

License Plate Lamp Control Circuit

B16E7 is an OBD-II diagnostic trouble code meaning: License Plate Lamp Control Circuit. Common causes: burnt out backlight bulb, open or short circuit in wiring harness. Estimated repair cost: $6–56.

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

Symptoms

  • License plate light does not work
  • Dashboard warning
  • The backlight flashes or is unstable

Causes

  • Burnt out backlight bulb
  • Open or short circuit in wiring harness
  • Bad fuse
  • Relay problems (if provided)
  • Body Control Module (BCM) Malfunction
  • Oxidation of contacts

How to Fix

  1. Check the condition of the backlight lamp and replace if necessary
  2. Inspect the wiring harness for damage
  3. Check the fuse and replace if necessary
  4. Check the relay (if any) and replace if faulty
  5. Check contacts for oxidation and clean if necessary
  6. Scan the body control module (BCM) for other errors
  7. If you suspect a BCM malfunction, perform module diagnostics

FAQ

What does the B16E7 code mean?

B16E7 is an OBD-II diagnostic trouble code that indicates: License Plate Lamp Control Circuit

What causes a B16E7 error code?

The most common causes of B16E7 include: Burnt out backlight bulb; Open or short circuit in wiring harness; Bad fuse; Relay problems (if provided).

How do I fix a B16E7 diagnostic trouble code?

To fix B16E7: Check the condition of the backlight lamp and replace if necessary. Inspect the wiring harness for damage. Check the fuse and replace if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B16E7?

Yes, but get it checked soon

How much does it cost to fix B16E7?

The estimated repair cost for B16E7 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat