Passenger Occupant Classification Sensor
Table of contents
B0074 SATURN Possible Causes
- Faulty Passenger Occupant Classification Sensor
- Passenger Occupant Classification Sensor harness is open or shorted
- Passenger Occupant Classification Sensor circuit poor electrical connection
- Faulty Sensing and Diagnostic Module (SDM)
How do I fix code B0074 SATURN?
Check 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.
Tech Notes
- DTC B0074 03 Passenger Occupant Classification Sensor Circuit Voltage Below Threshold
- DTC B0074 07 Passenger Occupant Classification Circuit Voltage Above Threshold
- DTC B0074 08 Passenger Occupant Classification Circuit Signal Invalid
Cost of diagnosing the B0074 SATURN code
The cost of diagnosing the B0074 SATURN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Air Bag Warning Light ON
B0074 SATURN Description
The Passenger Presence System (PPS) uses a silicone filled sensor pad located underneath the passenger seat foam cushion and is connected by a hose clamp to a pressure sensor. The weight of the occupant sitting in the front passenger seat is measured as a pressure change within the bladder by the pressure sensor. The pressure sensor is a 3-wire sensor consisting of a power, ground, and signal circuit. The PPS continually monitors itself and if a fault in this circuit occurs, a Diagnostic Trouble Code (DTC) will set. When the Sensing and Diagnostic Module (SDM) detects this DTC within the PPS, it will notify the customer of the enable/disable status by turning ON the OFF indicator on the PASSENGER AIR BAG ON/OFF indicators. Then the PPS will communicate to the SDM through serial data communications that a PPS fault is present. The SDM will then suppress the deployment of the Instrument Panel (I/P) module and then turn the AIR BAG indicator ON.
