OBD Guide
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B1BAA

Occupant Classification Module Configuration Mismatch

B1BAA is an OBD-II diagnostic trouble code meaning: Occupant Classification Module Configuration Mismatch. Common causes: occupant classification module (ocm) malfunction, problems with wiring harness to ocm. Estimated repair cost: $56–167.

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

Symptoms

  • The passive safety system fault indicator is on
  • The airbag may not deploy in an emergency.
  • The error persists after being reset by the scanner

Causes

  • Occupant Classification Module (OCM) malfunction
  • Problems with wiring harness to OCM
  • Incorrect module calibration
  • Mechanical damage to sensors in the seat
  • Software failure

How to Fix

  1. Carry out diagnostics with a scanner to confirm the error.
  2. Check the integrity of the wiring harness to the OCM
  3. Inspect the sensors in the seat for damage
  4. If necessary, recalibrate the module
  5. Replace the OCM if it is faulty

Related codes

B1BABB1BACB1BAD

FAQ

What does the B1BAA code mean?

B1BAA is an OBD-II diagnostic trouble code that indicates: Occupant Classification Module Configuration Mismatch

What causes a B1BAA error code?

The most common causes of B1BAA include: Occupant Classification Module (OCM) malfunction; Problems with wiring harness to OCM; Incorrect module calibration; Mechanical damage to sensors in the seat.

How do I fix a B1BAA diagnostic trouble code?

To fix B1BAA: Carry out diagnostics with a scanner to confirm the error.. Check the integrity of the wiring harness to the OCM. Inspect the sensors in the seat for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1BAA?

Do not drive — repair immediately

How much does it cost to fix B1BAA?

The estimated repair cost for B1BAA is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat