Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
DTC B0085 02 Left Front Side Impact Sensor Short to Ground
DTC B0085 05 Left Front Side Impact Sensor Short to Battery or Open
DTC B0085 0F Left Front Side Impact Sensor Erratic
DTC B0085 39 Left Front Side Impact Sensor Internal Electronic Failure
DTC B0085 3A Left Front Side Impact Sensor Incorrect Component Installed
DTC B0085 71 Left Front Side Impact Sensor Invalid Serial Data Received
The cost to diagnose the B0085 CADILLAC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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).
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