Buick Verano 2012-2017

Buick Verano 2012-2017 Emissions & Sensors Specifications

Complete technical specifications for 2012-2017 Buick Verano emissions sensors, including O2 sensors and catalytic converters. Essential data for diagnostics, repair, and emissions system maintenance.

Updated Jan 22, 2025

Overview Specifications

This document provides detailed specifications and technical information about the emissions sensors for the 2012-2017 Buick Verano. It is designed to assist technicians, engineers, and enthusiasts in understanding the components and functionality of the vehicle's emissions control system. The document is organized into sections that cover various aspects of the emissions sensors, including their types, locations, and maintenance. Use the search and navigation features to quickly find the information you need.

How to Use

To search for specific information, use the search bar at the top of the page. Enter keywords related to the emissions sensors you are interested in, such as 'O2 sensor' or 'catalytic converter'. The search results will highlight relevant sections and subsections.

Navigate through the document using the table of contents on the left side of the page. Click on a section or subsection title to jump directly to that part of the document. Use the 'Back to Top' button to quickly return to the beginning of the page.

Key Specifications

▲

O2 Sensor Voltage Range

0.1 to 0.9 volts

■

MAF Sensor Output

2.5 to 3.5 grams/second

●

Sensor Operating Temp

-40 to 250°C

◆

Sensor Lifespan

60,000 to 90,000 miles

★

Replacement Torque

30 to 40 Nm

Available Specifications

Types of Emissions Sensors

This section provides an overview of the different types of emissions sensors used in the 2012-2017 Buick Verano. These sensors play a crucial role in monitoring and controlling the vehicle's emissions to ensure compliance with environmental regulations. Understanding the types and functions of these sensors is essential for effective diagnostics and maintenance.

Oxygen (O2) Sensors

Located in the exhaust system before and after the catalytic converter
Monitor the oxygen content in the exhaust gases
Provide feedback to the Engine Control Unit (ECU) for optimal fuel mixture
Typically have a lifespan of 60,000 to 90,000 miles
Can be affected by contamination from oil or coolant leaks
Replacement involves disconnecting the electrical connector and unscrewing the sensor

Mass Air Flow (MAF) Sensor

Located in the air intake system
Measures the amount of air entering the engine
Helps the ECU adjust the fuel injection for efficient combustion
Can be cleaned with specialized MAF sensor cleaner
Symptoms of failure include poor fuel economy and rough idling
Replacement requires disconnecting the air intake tube and electrical connector

Sensor Locations

This section details the specific locations of emissions sensors in the 2012-2017 Buick Verano. Knowing where each sensor is located can help in diagnosing issues and performing maintenance. The locations are described in relation to major engine components and the exhaust system.

Front and Rear O2 Sensors

Front O2 sensor is located before the catalytic converter
Rear O2 sensor is located after the catalytic converter
Both sensors are mounted in the exhaust manifold or pipe
Accessible from underneath the vehicle
May require a special O2 sensor socket for removal
Ensure the vehicle is cool before attempting to replace

MAF Sensor Location

Located between the air filter box and the throttle body
Mounted in the air intake hose or duct
Easy to access with basic tools
Ensure the ignition is off before disconnecting
Check for any air leaks in the intake system
Reinstall the sensor securely to prevent air leaks

Maintenance and Troubleshooting

This section provides guidance on maintaining and troubleshooting emissions sensors in the 2012-2017 Buick Verano. Proper maintenance can extend the life of the sensors and ensure the vehicle runs efficiently. Troubleshooting tips help diagnose common issues related to emissions sensors.

Regular Maintenance

Inspect sensors during routine service intervals
Clean MAF sensor with appropriate cleaner every 15,000 miles
Check for corrosion or damage to sensor connectors
Ensure the exhaust system is free of leaks
Replace sensors as recommended by the manufacturer
Use only OEM or high-quality aftermarket sensors

Common Issues and Solutions

Check engine light due to faulty O2 sensor
Poor fuel economy caused by a failing MAF sensor
Rough idling or hesitation due to sensor malfunction
Diagnostic trouble codes (DTCs) related to emissions sensors
Use a scan tool to read and interpret DTCs
Replace sensors if cleaning does not resolve issues

Search Specifications

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Component Specifications

Overview

Type: Oxygen Sensor (O2 Sensor)

Configuration: Dual sensor system (upstream and downstream)

Platform: Integrated with Engine Control Unit (ECU)

Material: Zirconia ceramic sensing element

Location: Exhaust manifold and catalytic converter

Dimensions

Length: 3.15 inches (80 mm)

Diameter: 0.79 inches (20 mm)

Thread Size: M18 x 1.5

Wire Length: 12 inches (305 mm)

Weight: 0.22 lbs (100 grams)

Operating Temperature: -40°F to 1472°F (-40°C to 800°C)

Voltage Range: 0.1V to 1.0V

Materials

Sensing Element: Zirconia ceramic

Housing: Stainless steel

Connector: High-temperature plastic

Wires: PTFE insulated copper

Features

Sensing

Wide-range air-fuel ratio detection
Fast response time (<100ms)
High accuracy (±1% error)

Durability

Resistant to corrosion
Thermal shock resistance
Vibration resistant

integration

Direct ECU communication
Onboard diagnostics (OBD-II)
Self-diagnosis capability

Performance

Low power consumption
Stable signal output
Compatible with E10 fuels

Safety Features

Thermal Protection

Overheat protection
Thermal cutoff

Electrical Safety

Short-circuit protection
Reverse polarity protection

Comfort Features

installation

Easy access design
Standardized connector

Operation

Quiet operation
No maintenance required

Accessories

Mounting

Thread sealant
Anti-seize compound

Tools

O2 sensor socket
Wire crimping tool

Replacement

Replacement sensor
Extension harness

Maintenance

Service interval: Every 100,000 miles or 10 years

Service Items

Inspect for contamination
Check wire integrity
Test sensor output
Clean mounting area
Replace if faulty

Maintenance Notes: Avoid using silicone-based products near the sensor

Warranty

Standard Warranty: Miles: 36,000
Years: 3
Coverage: Parts and labor

Extended Warranty: Miles: 100,000
Years: 10
Coverage: Parts only

Emissions Warranty: Miles: 80,000
Years: 8
Coverage: Federal emissions components

Warranty Terms: Excludes damage from improper installation or contamination

Production Details

Manufacturer: Delphi Technologies

Manufacturing Process

Ceramic sintering
Precision machining
Automated assembly

Quality Control: Testing: Thermal cycling, Signal accuracy, Durability testing
Certifications: ISO 9001, ISO/TS 16949

Sustainability Practices

Recyclable materials
Low-emission manufacturing
Waste reduction programs

Production Metrics: Annual Output: 2 million units
Defect Rate: <0.1%

Service Information for emissions_sensors Service

Maintenance and service requirements specific to the oxygen sensors

30,000

Inspect sensor wiring
Check for exhaust leaks
Verify sensor output voltage
Clean sensor mounting area

Use only OEM-approved cleaning agents

100,000

120

Test sensor response time
Inspect for contamination
Replace if necessary
Verify ECU communication

Replacement requires specific torque settings

150,000

180

Full diagnostic scan
Replace both sensors
Inspect catalytic converter
Verify fuel system performance

Use anti-seize compound on new sensor threads

Frequently Asked Questions

Find answers to common questions about torque specifications

What are the technical specifications of the emissions sensors in the 2012-2017 Buick Verano?

The emissions sensors in the 2012-2017 Buick Verano include oxygen sensors, exhaust gas temperature sensors, and air/fuel ratio sensors. These sensors are compatible with the Ecotec 2.4L and 2.0L turbo engines. They operate within a temperature range of -40°F to 200°F and are designed to meet stringent emissions standards. Compatibility is ensured with the vehicle's OBD-II system for accurate readings and diagnostics.

What maintenance is required for the emissions sensors?

Regular maintenance for emissions sensors includes inspecting sensor connectors and wiring every 30,000 miles. Cleaning or replacing sensors contaminated by fuel or oil is necessary. Oxygen sensors should be replaced every 100,000 miles or as indicated by the vehicle's maintenance schedule. Ensure the engine control module is updated with the latest software to maintain optimal sensor performance.

How do I install or replace an emissions sensor?

To replace an emissions sensor, locate it based on the repair manual's instructions. Disconnect the battery to prevent any accidental engine start. Remove the sensor's electrical connector and any mounting hardware. Install the new sensor securely, ensuring proper torque specifications. Reconnect the electrical connector and battery, then clear any trouble codes using a scan tool. Test drive the vehicle to ensure proper operation.

How do I troubleshoot a faulty emissions sensor?

Use an OBD-II scan tool to retrieve trouble codes related to emissions sensors. Check for loose connections, corrosion, or damage to wiring and connectors. Test sensor voltage and resistance using a multimeter to ensure readings are within specifications. Consult the repair manual for specific testing procedures and replace sensors if necessary. Clear codes after repairs and test drive the vehicle to confirm the issue is resolved.

How can I optimize the performance of my emissions sensors?

Optimize emissions sensor performance by ensuring proper fuel quality, using the recommended fuel type. Regularly servicing the engine, including spark plugs and fuel injectors, can prevent contamination. Avoid aggressive driving and maintain steady speeds to reduce sensor wear. Keep the vehicle's software updated and address any trouble codes promptly to ensure accurate sensor readings and optimal emissions control.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

2012-2017 Buick Verano Service Manual

Coming Soon

This comprehensive service manual provides detailed procedures for diagnosing and servicing emissions sensors, including technical specifications and troubleshooting guides.

Technical Bulletin: Emissions Sensor Update

Coming Soon

This bulletin outlines updates and improvements for emissions sensors in the 2012-2017 Buick Verano, including software updates and diagnostic procedures.

Genuine GM Parts Catalog

Coming Soon

This catalog provides detailed information on emissions sensors and related components for the 2012-2017 Buick Verano, including part numbers and compatibility.

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