OBD Guide
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B16D7

Left Tail Lamp 1 Control Circuit

B16D7 is an OBD-II diagnostic trouble code meaning: Left Tail Lamp 1 Control Circuit. Common causes: burnt out lamp, broken wire in the control circuit. Estimated repair cost: $6–56.

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

Symptoms

  • Left rear lamp 1 does not work
  • Left rear lamp 1 flashing
  • Dashboard warning

Causes

  • Burnt out lamp
  • Broken wire in the control circuit
  • Poor contact in the connector
  • Faulty relay or control unit
  • Wiring harness damage

How to Fix

  1. Check the condition of the lamp and replace if necessary
  2. Inspect connectors and wires for damage
  3. Check control circuit voltage
  4. Check the operation of the relay and control unit
  5. Eliminate detected faults

Related codes

B16D8B16D6

FAQ

What does the B16D7 code mean?

B16D7 is an OBD-II diagnostic trouble code that indicates: Left Tail Lamp 1 Control Circuit

What causes a B16D7 error code?

The most common causes of B16D7 include: Burnt out lamp; Broken wire in the control circuit; Poor contact in the connector; Faulty relay or control unit.

How do I fix a B16D7 diagnostic trouble code?

To fix B16D7: Check the condition of the lamp and replace if necessary. Inspect connectors and wires for damage. Check control circuit voltage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B16D7?

Limited driving only, diagnose soon

How much does it cost to fix B16D7?

The estimated repair cost for B16D7 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat