OBD Guide
ENFRDEESPT

B1816

Open In Front Passenger Side Squib 2nd Step Circuit

B1816 is an OBD-II diagnostic trouble code meaning: Open In Front Passenger Side Squib 2nd Step Circuit. Common causes: broken or damaged wiring harness, second stage squib malfunction. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The passive safety system fault indicator is on
  • The front passenger airbag may not deploy in an accident.
  • Possible errors in other passive safety systems

Causes

  • Broken or damaged wiring harness
  • Second stage squib malfunction
  • Problems with the airbag control module
  • Corrosion or poor contact in connectors
  • Damage after an accident or unqualified repair

How to Fix

  1. Diagnose the passive safety system using a scanner
  2. Check the integrity of the wiring harness and connectors
  3. Check the resistance of the second stage squib
  4. Replace damaged components (harness, squib, control module)
  5. Reset the error and check the system

Related codes

B1815B1817B1820

FAQ

What does the B1816 code mean?

B1816 is an OBD-II diagnostic trouble code that indicates: Open In Front Passenger Side Squib 2nd Step Circuit

What causes a B1816 error code?

The most common causes of B1816 include: Broken or damaged wiring harness; Second stage squib malfunction; Problems with the airbag control module; Corrosion or poor contact in connectors.

How do I fix a B1816 diagnostic trouble code?

To fix B1816: Diagnose the passive safety system using a scanner. Check the integrity of the wiring harness and connectors. Check the resistance of the second stage squib. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1816?

Limited driving only, diagnose soon

How much does it cost to fix B1816?

The estimated repair cost for B1816 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat