AutoCodes – Saturn – B0074 Saturn

B0074 Saturn Code - Passenger Occupant Classification Sensor

Quick Answer

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. Common causes include Faulty Passenger Occupant Classification Sensor, Passenger Occupant Classification Sensor harness is open or shorted, Passenger Occupant Classification Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B0074 Saturn indicates Passenger Occupant Classification Sensor.
Common causes: Common causes include Faulty Passenger Occupant Classification Sensor, Passenger Occupant Classification Sensor harness is open or shorted, Passenger Occupant Classification Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,245

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code 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.

OBDII Code B0074 Saturn - Passenger Occupant Classification Sensor - AutoCodes.com — B0074 Saturn Code - Passenger Occupant Classification Sensor

What does this mean?

What are the Possible Causes of the DTC B0074 Saturn?

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 to Fix the DTC B0074 Saturn?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code 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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B0074 Saturn code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B0074 Saturn code?

Need more information on how to fix the B0074 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0074 Saturn code diagnosed by a professional: Find a repair shop in your area

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.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B0074 Saturn Code

1. What are common symptoms of OBDII code B0074 in a Saturn related to the Passenger Occupant Classification Sensor?

The common symptoms include the airbag warning light staying on, the passenger airbag being disabled, and potential issues with the airbag system's functionality.

2. What are the possible causes of OBDII code B0074 in a Saturn?

Possible causes of this code include a faulty passenger occupant classification sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the airbag control module.

3. How can I diagnose the issue related to OBDII code B0074 in my Saturn?

Diagnosing the problem involves using an OBDII scanner to retrieve the specific fault code, inspecting the passenger occupant classification sensor and its connections, and testing the sensor's functionality using a multimeter.

4. Can I repair the Passenger Occupant Classification Sensor issue causing code B0074 in my Saturn myself?

Depending on your skill level and access to tools, you may be able to replace the sensor or repair any damaged wiring yourself. However, it's recommended to seek professional help for a proper diagnosis and repair.

5. Are there any safety concerns associated with OBDII code B0074 in a Saturn?

Yes, there are safety concerns as the passenger airbag may not deploy properly in the event of an accident if the issue is not resolved. It's crucial to address this problem promptly.

6. How much does it typically cost to repair OBDII code B0074 in a Saturn?

The cost of repairing this code can vary depending on the specific cause of the issue. It may range from a few hundred dollars for sensor replacement to more significant costs if other components need to be repaired or replaced.

7. Can I still drive my Saturn with OBDII code B0074 present?

While it may be possible to drive the vehicle with this code present, it's not recommended due to safety concerns related to the airbag system. It's best to address the issue as soon as possible.

8. Will resetting the OBDII code B0074 in my Saturn make the problem go away?

Resetting the code may temporarily turn off the warning light, but it won't fix the underlying issue with the passenger occupant classification sensor. The problem is likely to reoccur until properly repaired.

9. How long does it usually take to repair OBDII code B0074 in a Saturn?

The repair time can vary depending on the exact cause of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.

10. Is there a recall or technical service bulletin related to OBDII code B0074 in Saturn vehicles?

It's advisable to check with a Saturn dealership or the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls or technical service bulletins related to this specific OBDII code and the Passenger Occupant Classification Sensor issue.