OBD Guide

B16D5

Right DRL Lamp Control Circuit High

B16D5 is an OBD-II diagnostic trouble code meaning: Right DRL Lamp Control Circuit High. Common causes: short circuit to positive in the drl circuit, malfunction of the lighting control unit. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Right DRL flashing or failure
  • Dashboard warning light
  • Circuit protection tripped

Causes

  • Short circuit to positive in the DRL circuit
  • Malfunction of the lighting control unit
  • Wiring harness damage
  • Oxidation of contacts
  • Mechanical damage to the headlight

How to Fix

  1. Visual inspection of the headlight and wires
  2. Checking the voltage in the DRL circuit with a multimeter
  3. Diagnostics of circuit resistance
  4. Checking mass integrity
  5. Testing the operation of the control unit
  6. Replacing damaged components

Related codes

FAQ

What does the B16D5 code mean?

B16D5 is an OBD-II diagnostic trouble code that indicates: Right DRL Lamp Control Circuit High

What causes a B16D5 error code?

The most common causes of B16D5 include: Short circuit to positive in the DRL circuit; Malfunction of the lighting control unit; Wiring harness damage; Oxidation of contacts.

How do I fix a B16D5 diagnostic trouble code?

To fix B16D5: Visual inspection of the headlight and wires. Checking the voltage in the DRL circuit with a multimeter. Diagnostics of circuit resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B16D5?

Limited driving only, diagnose soon

How much does it cost to fix B16D5?

The estimated repair cost for B16D5 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat