AutoCodes – Pontiac – B0074 Pontiac

B0074 Pontiac 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 Pontiac 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 1,556

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 Pontiac 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 Pontiac - Passenger Occupant Classification Sensor - AutoCodes.com — B0074 Pontiac Code - Passenger Occupant Classification Sensor

What does this mean?

What are the Possible Causes of the DTC B0074 Pontiac?

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 Pontiac?

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 Pontiac 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 Pontiac code?

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

Need Help with the Code?

Get the B0074 Pontiac 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 Pontiac Code

1. What is OBDII code B0074 in a Pontiac and what does it mean?

The OBDII code B0074 in a Pontiac indicates a problem with the Passenger Occupant Classification Sensor.

2. What are common symptoms of a B0074 code in a Pontiac?

Common symptoms of a B0074 code may include the airbag warning light illuminating on the dashboard, issues with airbag deployment, and potential loss of functionality in the passenger airbag.

3. What are possible causes of the B0074 code in a Pontiac?

Possible causes of the B0074 code include a faulty Passenger Occupant Classification Sensor, damaged wiring or connectors related to the sensor, or a malfunction in the airbag control module.

4. How can I diagnose the B0074 code in my Pontiac?

Diagnosing the B0074 code typically involves using a scan tool to retrieve the specific fault code, inspecting the Passenger Occupant Classification Sensor and its connections for any visible damage, and testing the sensor's functionality according to the manufacturer's guidelines.

5. Can I drive my Pontiac with a B0074 code?

It is not recommended to drive your Pontiac with a B0074 code present, as it indicates a potential issue with the passenger airbag system, which is a critical safety component in the vehicle.

6. How can I repair a B0074 code in my Pontiac?

Repairing a B0074 code may involve replacing the faulty Passenger Occupant Classification Sensor, repairing damaged wiring or connectors, or reprogramming the airbag control module, depending on the specific cause of the issue.

7. Is it safe to reset the B0074 code in my Pontiac without fixing the underlying issue?

Resetting the B0074 code without addressing the underlying problem is not recommended, as it may lead to continued safety risks associated with the passenger airbag system.

8. How much does it cost to repair a B0074 code in a Pontiac?

The cost of repairing a B0074 code in a Pontiac can vary depending on the specific cause of the issue, the parts required for the repair, and labor costs at a repair shop. It is advisable to consult with a professional for an accurate estimate.

9. Can a DIY enthusiast fix a B0074 code in a Pontiac?

While some DIY enthusiasts may have the skills to diagnose and repair a B0074 code, working on airbag systems can be complex and potentially dangerous. It is recommended to seek professional help if you are not experienced in handling such repairs.

10. How often does the Passenger Occupant Classification Sensor need to be replaced in a Pontiac?

The Passenger Occupant Classification Sensor may not need frequent replacement unless it is damaged or malfunctions. Regular maintenance and inspections can help prevent issues with the sensor and the associated B0074 code.