OBD Guide
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B220B

Occupant Restraint Controller Firing Stored Energy

B220B is an OBD-II diagnostic trouble code meaning: Occupant Restraint Controller Firing Stored Energy. Common causes: restraint controller malfunction, open or short circuit in wiring harness. Estimated repair cost: $111–556.

Severity
🚨 Critical
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$111–556 (est.)

Symptoms

  • Airbag light is on
  • Disabling the restraint system
  • Error in on-board computer memory

Causes

  • Restraint controller malfunction
  • Open or short circuit in wiring harness
  • Defective squibs
  • Problems with the on-board network (voltage surges)

How to Fix

  1. Diagnostics of the passive safety system with a scanner
  2. Checking the condition of the wiring harness and connectors
  3. Testing the passive safety system controller
  4. Replacement of faulty components (controller, squibs, wiring harness)
  5. Resetting the error and re-diagnosis

Related codes

B220AB220C

FAQ

What does the B220B code mean?

B220B is an OBD-II diagnostic trouble code that indicates: Occupant Restraint Controller Firing Stored Energy

What causes a B220B error code?

The most common causes of B220B include: Restraint controller malfunction; Open or short circuit in wiring harness; Defective squibs; Problems with the on-board network (voltage surges).

How do I fix a B220B diagnostic trouble code?

To fix B220B: Diagnostics of the passive safety system with a scanner. Checking the condition of the wiring harness and connectors. Testing the passive safety system controller. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B220B?

Do not drive — repair immediately

How much does it cost to fix B220B?

The estimated repair cost for B220B is $111–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat