Damaged or corroded wiring harness and connector at the left front side impact sensor; Failed left front side impact sensor; Water intrusion or corrosion into the sensor connector or mounting area; Loose or corroded ground connection for the sensor circuit; Faulty restraint control module (RCM) or its internal sensor supply circuit; Aftermarket accessories or previous body repair disturbing the sensor wiring

DTC codes / B00xx · Airbags, seats, doors, lights and comfort systems / B0092

B0092Side Impact Sensor Left Front Malfunction

Q: What does code B0092 mean?

Side Impact Sensor Left Front Malfunction. B0092 means the restraint control module (RCM) has detected an electrical fault in the left front side impact sensor circuit, which is used to trigger the side airbags and seatbelt pretensioners in a crash. The module monitors the sensor's signal voltage and sets this code when the reading falls outside the expected range or the circuit fails a self-test.

B0092 means the restraint control module (RCM) has detected an electrical fault in the left front side impact sensor circuit, which is used to trigger the side airbags and seatbelt pretensioners in a crash. The module monitors the sensor's signal voltage and sets this code when the reading falls outside the expected range or the circuit fails a self-test.

SystemBody

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaAirbags, seats, doors, lights and comfort systems

Symptoms you may notice

Airbag warning light illuminated on the instrument cluster
Often no symptoms besides the warning light, with the vehicle driving normally
Side airbag system disabled, so side airbags and pretensioners may not deploy in a collision
Intermittent warning light that comes and goes over bumps or in wet weather
A stored crash or restraint fault message visible on a scan tool

Common causes, most likely first

Damaged or corroded wiring harness and connector at the left front side impact sensor
Failed left front side impact sensor
Water intrusion or corrosion into the sensor connector or mounting area
Loose or corroded ground connection for the sensor circuit
Faulty restraint control module (RCM) or its internal sensor supply circuit
Aftermarket accessories or previous body repair disturbing the sensor wiring

How to diagnose and fix it

Scan all modules and record the exact B0092 status and any related restraint codes before clearing anything
Inspect the left front side impact sensor connector and wiring for corrosion, water intrusion, chafing, and loose pins
Check the sensor mounting, ground, and circuit continuity with a multimeter against the manufacturer's resistance and voltage specifications
Substitute a known-good sensor of the same part type and recheck the code to confirm whether the sensor or the circuit is at fault
Repair or replace damaged wiring, terminals, or the sensor as indicated by the test results
Clear codes and verify the repair by cycling the ignition and confirming the airbag light stays off
Perform a restraint system self-test with a capable scan tool to confirm no codes return

What the side impact sensor code hides

A B0092 is frequently caused by a corroded connector or chafed wire rather than a failed sensor, especially after bodywork or in vehicles exposed to road salt and water.
The code does not always mean the sensor itself is bad; the RCM can set it when its own supply voltage or ground reference is unstable.
Disconnecting the battery and waiting the specified time is mandatory before working on restraint circuits, because stored capacitor energy can deploy an airbag.
After any restraint repair, the RCM may need a learn or calibration procedure, and some vehicles latch a crash record that must be cleared with a capable scan tool.
A side impact sensor that is physically loose or mounted with the wrong fastener can set this code because the sensor's internal accelerometer reads incorrectly.

Can I keep driving with B0092?

The vehicle remains driveable, but the side airbag and pretensioner protection on that side may be disabled, so avoid aggressive driving and have the fault repaired promptly. Do not attempt to repair restraint wiring without disconnecting the battery and following the manufacturer's safety procedure.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.