B0092 Body DTC Code

OBD-II Trouble Code Technical Description

Left Side Restraints Sensor 2 (Subfault) [or PPS Passenger Detection Error on GM vehicles]

What does that mean?

This diagnostic trouble code B0092 seems to be most common on GM vehicles (Chevy, Buick, GMC, etc.), and on GM vehicles the code may be defined as PPS passenger detection error. It's not a real common code though. The left side restraints sensor 2 pertains to the entire restraint system in the vehicle. Here's a quote from a document on the system:

"When the ignition is turned ON, the inflatable restraint sensing and diagnostic module (SDM) performs tests to diagnose critical malfunctions within itself. When the SDM has completed the power-up mode the SDM will establish communication with the passenger presence system (PPS). The PPS will respond by commanding both the PASSENGER AIR BAG ON/OFF indicators located in the rearview mirror ON for 5 seconds. The SDM will transmit a request message to the PPS to receive the PPS verification ID. The PPS will transmit the verification ID to the SDM and the SDM will compare the ID received to data stored in memory. The SDM will also set DTC B0092 to notify the driver that the PPS has a current malfunction present. When the SDM detects that the PPS has set any one of the following DTCs, 023, 024, 063, 064, or 065 the SDM will disable the instrument panel module deployment loop, set DTC B0092 and command the AIR BAG indicator ON."

Potential Symptoms

A B0092 may result in the driver seeing abnormal behavior with illumination lights such as the Air bag warning lamp and/or the passenger air bag warning lamp may or may not illuminate normally.

Possible Solutions

This DTC B0092 is involved in some GM vehicles, there is a known TSB. So if you own an Escalade, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon, or other vehicle, be sure to check for a TSB first. Please note that TSBs are not meant for do-it-yourself type folks. TSBs are intended to be used by GM technicians.

However the first steps to perform is check the wiring and connectors and make sure wires are not pinched, broken, etc. If visually OK, check the circuits for continuity and resistance per factory specs. Verify operation of the PPS and replace if necessary. More specifically this is a snippet on how to diagnose the GM B0092 error:

• Ignition ON, the PPS should turn ON the PPS ON/OFF indicators. Verify the PPS illuminates the PPS ON/OFF indicators.
  - If the Passenger Air Bag ON/OFF status indicator does not illuminate refer to Passenger Presence System Indicator Circuit Malfunction
• Ignition ON, use the scan tool. Go to the PPS menu, then retrieve the DTCs. Refer to Passenger Presence System Flash Code Procedures . Verify no PPS DTCs are set. - If the PPS has any current or history DTCs stored, you must address the PPS DTCs first. Refer to the Diagnostic Trouble Code (DTC) List - Vehicle
• Ignition OFF, disconnect the PPS module connector
• Remove the SDM connector
• Test the occupant sensor serial data circuit for an open, short to ground, or high resistance between the PPS and SDM connector. Verify no open, short to ground, or high resistance exists. - If any of the above conditions are found make the appropriate repair.
• Test the PPS ignition 1 voltage and ground circuits for a short to ground, a short to voltage, a high resistance, or an open. Verify no short to ground, a short to voltage, a high resistance, or an open exists. - If any of the above conditions are found make the appropriate repair.
• If all circuits test normal then replace the PPS."

Further Reading

• Automotive Circuit Testing

Need more help?

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