OBD Guide
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B1920

Air Bag Passenger Circuit Failure

B1920 is an OBD-II diagnostic trouble code meaning: Air Bag Passenger Circuit Failure. Common causes: open or short circuit in wiring harness, airbag squib malfunction. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • The SRS/airbag indicator on the dashboard is on
  • The passenger airbag may not deploy in a crash.
  • Possible errors in the memory of the SRS unit

Causes

  • Open or short circuit in wiring harness
  • Airbag squib malfunction
  • Poor contact in connectors
  • Damage to the SRS control unit
  • Contact corrosion

How to Fix

  1. Diagnose the SRS system using a scanner
  2. Check the integrity of the wiring harness to the passenger airbag
  3. Inspect connectors and contacts for oxidation
  4. Check the resistance of the airbag squib
  5. Replace damaged components if necessary
  6. Reset errors and check system operation

Related codes

B1910B1921B1930

FAQ

What does the B1920 code mean?

B1920 is an OBD-II diagnostic trouble code that indicates: Air Bag Passenger Circuit Failure

What causes a B1920 error code?

The most common causes of B1920 include: Open or short circuit in wiring harness; Airbag squib malfunction; Poor contact in connectors; Damage to the SRS control unit.

How do I fix a B1920 diagnostic trouble code?

To fix B1920: Diagnose the SRS system using a scanner. Check the integrity of the wiring harness to the passenger airbag. Inspect connectors and contacts for oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1920?

Do not drive — repair immediately

How much does it cost to fix B1920?

The estimated repair cost for B1920 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat