OBD Guide
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B1BC8

Passenger Seat Weight Sensor Performance

B1BC8 is an OBD-II diagnostic trouble code meaning: Passenger Seat Weight Sensor Performance. Common causes: passenger weight sensor damage, open or shorted wiring harness. Estimated repair cost: $56–222.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–222 (est.)

Symptoms

  • Airbag light (SRS) is on
  • Passenger airbag disabled
  • The error is read by the OBD-II scanner

Causes

  • Passenger weight sensor damage
  • Open or shorted wiring harness
  • Corrosion or poor connector contact
  • SRS control unit malfunction

How to Fix

  1. Diagnostics of the SRS system with a scanner
  2. Checking the integrity of the wiring harness and connectors
  3. Passenger Weight Sensor Resistance Test
  4. Load Cell Replacement or Wiring Harness Repair
  5. Reset error and recheck

Related codes

B1BC7B1BC9B1B00

FAQ

What does the B1BC8 code mean?

B1BC8 is an OBD-II diagnostic trouble code that indicates: Passenger Seat Weight Sensor Performance

What causes a B1BC8 error code?

The most common causes of B1BC8 include: Passenger weight sensor damage; Open or shorted wiring harness; Corrosion or poor connector contact; SRS control unit malfunction.

How do I fix a B1BC8 diagnostic trouble code?

To fix B1BC8: Diagnostics of the SRS system with a scanner. Checking the integrity of the wiring harness and connectors. Passenger Weight Sensor Resistance Test. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1BC8?

Do not drive — repair immediately

How much does it cost to fix B1BC8?

The estimated repair cost for B1BC8 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat