Question 1

What does B0051 mean?

Accepted Answer

B0051 - Occupant Classification System — Sensor Malfunction. Passenger seat occupant classification system is malfunctioning.

Question 2

What are the symptoms of B0051?

Accepted Answer

Airbag light on, Passenger airbag off light, Weight classification incorrect

Question 3

What causes B0051?

Accepted Answer

Weight sensor in seat failed, Seat sensor wiring, Spilled liquid on sensor, OCS module failure

Question 4

How much does it cost to fix B0051?

Accepted Answer

Typical repair cost: $200-$1,500. On GM, passenger seat mat sensor is common failure ($200-400). Aftermarket seat covers can trigger this.

B0051 — Occupant Classification System — Sensor Malfunction

Don't guess — diagnose B0051 the right way