B0086 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B0086 – Right Front Side Impact Sensor


B0086 Possible Symptoms


Air Bag Warning Light ON


B0086 Possible Causes


Faulty Right Front Side Impact Sensor,Right Front Side Impact Sensor harness is open or shorted,Right Front Side Impact Sensor circuit poor electrical connection,Faulty Inflatable Restraint Sensing and Diagnostic Module (SDM)


B0086 Description


The Inflatable Restraint Side Impact Sensor (SIS) utilizes a unidirectional 2-wire circuit. The SIS modulates current on the interface to send ID, state of health, and deployment commands to the Inflatable Restraint Sensing and Diagnostic Module (SDM). The SDM serves as a power source and a ground for the SIS. When the ignition is turned ON and input power from the SDM is first detected, the SIS responds by performing internal diagnostics and sending an ID to the SDM. The SDM considers the ID to be valid if the response time is less than 5 seconds. The SIS continually communicates status messages to the SDM, which determines if a fault is present in the SIS circuit. When a fault is detected, the SDM resets the SIS twice by removing and reapplying power to it. If the fault is still present, the SDM will set a Diagnostic Trouble Code (DTC).