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DTC codes / B00xx · Airbags, seats, doors, lights and comfort systems / B0096

B0096Side Impact Sensor Left Rear Malfunction

B0096 indicates that the body control module or occupant restraint controller has detected a malfunction in the left rear side impact sensor circuit, which is responsible for detecting a collision and triggering the side airbag and seatbelt pretensioner. The computer monitors the sensor's signal and sets this code when the voltage, resistance, or communication from that sensor falls outside the expected range.

SystemBody
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyIntermediate
AreaAirbags, seats, doors, lights and comfort systems

Symptoms you may notice

  • The airbag warning light on the instrument cluster is illuminated.
  • Often no symptoms besides the warning light, with no drivability issues.
  • The side airbag system may be disabled, so the airbag will not deploy in a side impact.
  • In some vehicles, a message such as 'Service Airbag System' appears on the driver information center.
  • Intermittent warning light operation if the fault is a loose connection or chafed wire.
  • Other restraint system codes may be stored alongside B0096.

Common causes, most likely first

  1. Faulty left rear side impact sensor.
  2. Damaged or corroded wiring harness or connector at the sensor.
  3. Open or short circuit in the sensor circuit wiring.
  4. Water intrusion or physical damage to the sensor or its connector.
  5. Loose or corroded ground connection for the sensor circuit.
  6. Failed occupant restraint controller (less common).
  7. Aftermarket accessories or previous repairs disturbing the sensor circuit.

How to diagnose and fix it

  1. Verify the code with a scan tool that can read body codes and record any freeze-frame data.
  2. Visually inspect the left rear side impact sensor, its connector, and wiring for damage, corrosion, or loose pins.
  3. Check the sensor circuit wiring for continuity and shorts using a digital multimeter, following the manufacturer's wiring diagram.
  4. Test the sensor's resistance or voltage signal according to the service information and compare with specifications.
  5. If the sensor fails the test, replace it with a correct replacement and clear the code.
  6. If the wiring is faulty, repair or replace the affected section of the harness and connectors.
  7. After repairs, clear codes and verify the airbag warning light operates correctly and no codes return.

What most technicians overlook on B0096

  • A bad connection at the left rear side impact sensor is more common than a failed sensor, so always inspect the connector and terminals before condemning the part.
  • The side impact sensor is often located behind the rear door trim or under the rear seat, where water leaks or previous body repairs can damage the wiring.
  • B0096 can be set by a low battery or charging system issue that causes a momentary voltage drop, so check the battery and charging system first.
  • Replacing the sensor without clearing the code and verifying the repair can leave the airbag system disabled, so always confirm the warning light goes out after the fix.
  • Some vehicles require programming or calibration of the new sensor after replacement, so consult the service information before installing parts.

Can I keep driving with B0096?

The vehicle is safe to drive under normal conditions because the airbag system is disabled only for the affected side, but you should avoid any situation that could lead to a side impact until the fault is repaired. Have the system diagnosed promptly to restore full airbag protection.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

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

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