Fix B0092: Mechanic’s Solutions That WORKED!

The B0092: Passenger Presence System 1 Circuit Fault is associated with the Passenger Presence System (PPS), a safety mechanism designed to detect whether a passenger is seated and consequently, whether the passenger airbag should be enabled or disabled.

This code indicates a circuit fault within this system, which can arise from various issues such as liquid spills, disconnected connectors, or damaged components. It’s a crucial safety concern as it directly impacts airbag functionality and passenger safety during an accident.

B0092 quick overview

Meaning	B0092: Passenger Presence System 1 Circuit Fault
Is it serious?	Yes, it’s serious due to its impact on passenger safety through the airbag system.
Possible causes	– Liquid spills on the passenger seat – Disconnected or damaged connectors – Faulty seat module or sensor – Aftermarket seat covers or items obstructing the seat sensor
How to diagnose?	Inspect the passenger seat for liquid spills, damage, or obstructions. Check connectors and wiring under the passenger seat for disconnection, damage, or corrosion. Test the seat module and sensor for functionality. Consult TSBs related to the B0092 code for your specific vehicle model. Replace faulty components as necessary, considering both the module and sensor.

How to fix B0092 – learn from mechanics

I looked into B0092 service cases at iatn.com website where in the private forums the mechanics seek advice from other mechanics. I looked up a bunch of cases to help you decide how to fix your issue and see what would a real mechanic do to solve it.

Case #1: Saturn B0092

Vehicle information 2007 Saturn Vue 3.5L

Issue + repair history

• Code B0092 (Passenger Presence System 1 Circuit Fault) found in the Air Bag module.
• Unsure about the exact location to address the code.
• Dealer discovered coffee spill in the passenger seat shorted out the module.
• Dealer replaced the seat module and sensor to resolve the issue.

Other OBD2 Codes + Test Results

• No additional codes mentioned.
• No test results provided.

Mechanic suggestions

• Check for any prior accident damage.
• Inspect the SDM for corrosion, proper part number, and pin fit.
• Examine wiring to the passenger lower seat cushion for stretching or damage.
• Consider replacing the seat cushion and module together if the seat is wet.
• Perform diagnostics based on TSB recommendations if the cushion is wet.
• Follow specific procedures for drying the wet cushion and rechecking for codes.

Final fix

• Dealer replaced the seat module and sensor after discovering a coffee spill in the passenger seat, resolving the issue.

Case #2: Chevrolet B0092

Vehicle information 2005 Chevrolet Uplander 3.5L

Issue + repair history

• Code B0092 (Passenger Presence System 1 Circuit Fault) found in the Air Bag module.
• Code reoccurred after previous erasure and dealer visit under warranty.
• Difficulty locating code B0092 in Alldata for pinpoint tests.
• Discovered main connector to passenger’s seat sensor undone and lock removed by items pushed underneath the driver’s seat.

Other OBD2 Codes + Test Results

• No additional codes mentioned.
• No test results provided.

Mechanic suggestions

• Offered diagnostic and repair procedures for code B0092.
• Suggested checking for aftermarket comfort items in the seat and any dash lights indicating passenger airbag status.
• Provided detailed troubleshooting assistance and offered to share a PDF trouble chart for the code.
• Advised contacting GM to discuss coverage with the local tech-rep.
• Speculated the code could relate to the right-side side impact sensor.
• Shared a similar experience with a 2005 Suburban where the connector under the passenger seat was slightly unplugged and missing the locking tab.

Final fix

• Reconnected the main connector to the passenger’s seat sensor and resolved the issue.

Case #3: GMC B0092

Vehicle information 2003 GMC Sierra 1500 SLE 4.3L

Issue + repair history

• Body SRS code: B0092 (Passenger Suppression System)
• Checked harness and body wiring, all found to be okay.
• Uncertain whether the issue lies with the module under the seat or the pressure transducer for the passenger seat.
• Tech 2 commanded the SRS light to flash a 2-digit code, but it only flashed 4 times.

Other OBD2 Codes + Test Results

• No additional codes mentioned.
• No further test results provided.

Mechanic suggestions

• Suggested checking the connectors by the pass door harness where it passes through a pillar, as there could be a tweaked SRS connector affected by door opening/closing.
• Provided a link to a resource mentioning a Technical Service Bulletin (TSB) for Sierra’s with code B0092.

Final fix

• Determined that the module under the seat and the pressure transducer for the seat detection were faulty.
• Estimated parts cost from the dealer to be over $600.
• Customer decided to explore cheaper repair options and took the vehicle to another shop.

Diagnostic Step	Explanation
Inspect the passenger seat for spills and obstructions	Check for any liquid damage or items that could interfere with the seat’s sensor.
Check connectors and wiring	Ensure all connections under the seat are secure and undamaged. Look for signs of wear or corrosion.
Test the seat module and sensor	Use diagnostic tools to check the functionality of the seat module and presence sensor.
Consult Technical Service Bulletins (TSBs)	Look for any manufacturer’s notes or recalls that might pertain to the B0092 code and suggested fixes.
Replace faulty components	If diagnostics point to faulty equipment, replace the necessary components to restore system functionality.