B0091 - Left Front Side Air Bag Satellite Sensor
Repair Importance Level:
Repair Difficulty Level:
Possible causes
- Faulty Left Front Side Air Bag Satellite Sensor
- Left Front Side Air Bag Satellite Sensor harness is open or shorted
- Left Front Side Air Bag Satellite Sensor circuit poor electrical connection
Possible symptoms
- Air Bag Warning Light ON
B0091 Description
The Restraints Control Module (RCM) monitors all of Supplemental Restraint System (SRS) device connections. If the RCM detects a connection or device connected that is not stored in memory or is not configured for the component, the RCM will set a Diagnostic Trouble Code (DTC) and send a message to the Instrument Panel Cluster (IPC) to illuminate air bag warning indicator.
B0091 Information for specific makes
- B0091 BUICK Front End Sensor 3 Erratic
- B0091 CADILLAC Front End Sensor 3 Erratic
- B0091 CHEVROLET Front End Sensor 3 Erratic
- B0091 FORD Left Side Restraints Sensor 1
- B0091 GMC Front End Sensor 3 Erratic
- B0091 INFINITI Left Front Side Air Bag Satellite Sensor
- B0091 LINCOLN Left Side Restraints Sensor 1
- B0091 MERCURY Left Side Restraints Sensor 1
- B0091 NISSAN Left Front Side Air Bag Satellite Sensor
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.