OBD Guide
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B1BBA

Passenger Seat Weight Sensor Supply Circuit

B1BBA is an OBD-II diagnostic trouble code meaning: Passenger Seat Weight Sensor Supply Circuit. Common causes: open or short circuit in the sensor power supply circuit, passenger seat weight sensor damage. Estimated repair cost: $56–167.

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

Symptoms

  • The passive safety system fault indicator is on
  • Incorrect operation of the front passenger airbag
  • Error message on the dashboard

Causes

  • Open or short circuit in the sensor power supply circuit
  • Passenger seat weight sensor damage
  • Wiring harness fault
  • Contact corrosion
  • Bad connection

How to Fix

  1. Check the integrity of the sensor power supply circuit
  2. Inspect the passenger seat weight sensor for damage.
  3. Check the wiring harness for damage
  4. Clean contacts from corrosion
  5. Check connections
  6. If necessary, replace the sensor or wiring harness

Related codes

B1BB9B1BBBB1BBC

FAQ

What does the B1BBA code mean?

B1BBA is an OBD-II diagnostic trouble code that indicates: Passenger Seat Weight Sensor Supply Circuit

What causes a B1BBA error code?

The most common causes of B1BBA include: Open or short circuit in the sensor power supply circuit; Passenger seat weight sensor damage; Wiring harness fault; Contact corrosion.

How do I fix a B1BBA diagnostic trouble code?

To fix B1BBA: Check the integrity of the sensor power supply circuit. Inspect the passenger seat weight sensor for damage.. Check the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1BBA?

Limited driving only, diagnose soon

How much does it cost to fix B1BBA?

The estimated repair cost for B1BBA is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat