Buick LaCrosse 2017-2019 Emissions & Sensors Specifications
Explore detailed specifications for the emissions sensors in the 2017-2019 Buick LaCrosse. Learn about sensor types, locations, functions, and compatibility for diagnostics, repair, and maintenance.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors in the 2017-2019 Buick LaCrosse. It is designed to help users understand the components, functionality, and maintenance of these sensors. Use the search and navigation features to quickly locate specific information. The document is divided into sections covering sensor types, diagnostic tools, maintenance tips, and performance metrics.
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Key Specifications
O2 Sensor Operating Temperature
600°C (1112°F)
MAF Sensor Voltage Range
0.5-5.0V
EGR Sensor Flow Rate
10-15 L/min
OBD-II Port Location
Under dashboard
Sensor Lifespan
60,000-90,000 miles
Available Specifications
Sensor Types
This section outlines the different types of emissions sensors used in the 2017-2019 Buick LaCrosse. It includes details on their functions, locations, and roles in reducing emissions.
Sensor Types
This section outlines the different types of emissions sensors used in the 2017-2019 Buick LaCrosse. It includes details on their functions, locations, and roles in reducing emissions.
Oxygen (O2) Sensors
- Located in the exhaust system before and after the catalytic converter
- Monitor oxygen levels in exhaust gases
- Provide data to the Engine Control Unit (ECU) for fuel mixture adjustments
- Typically last 60,000-90,000 miles
Mass Airflow (MAF) Sensors
- Measures the amount of air entering the engine
- Located between the air filter and intake manifold
- Helps optimize fuel injection and combustion
- Requires periodic cleaning for accurate readings
Exhaust Gas Recirculation (EGR) Sensors
- Monitors the flow of recirculated exhaust gases
- Reduces nitrogen oxide (NOx) emissions
- Located near the EGR valve
- Prone to carbon buildup, requiring regular maintenance
Diagnostic Tools
This section explains the tools and methods used to diagnose issues with emissions sensors in the Buick LaCrosse. It covers onboard diagnostics, error codes, and troubleshooting tips.
Diagnostic Tools
This section explains the tools and methods used to diagnose issues with emissions sensors in the Buick LaCrosse. It covers onboard diagnostics, error codes, and troubleshooting tips.
Onboard Diagnostics (OBD-II)
- Standardized system for monitoring emissions sensors
- Provides error codes for malfunctioning sensors
- Accessible via the OBD-II port under the dashboard
- Common tools include OBD-II scanners and apps
Error Code Interpretation
- P0130: Oxygen Sensor Circuit Malfunction
- P0171: System Too Lean (Bank 1)
- P0401: Insufficient EGR Flow
- P0101: Mass Airflow Sensor Circuit Range/Performance
Maintenance Tips
This section provides practical advice for maintaining emissions sensors in the Buick LaCrosse. It includes cleaning procedures, replacement intervals, and best practices for optimal performance.
Maintenance Tips
This section provides practical advice for maintaining emissions sensors in the Buick LaCrosse. It includes cleaning procedures, replacement intervals, and best practices for optimal performance.
Cleaning Sensors
- Use specialized MAF sensor cleaner for mass airflow sensors
- Avoid using compressed air on O2 sensors
- Inspect for carbon buildup on EGR sensors
- Follow manufacturer guidelines for cleaning frequency
Replacement Intervals
- Replace O2 sensors every 60,000-90,000 miles
- Check MAF sensors annually for signs of wear
- Inspect EGR sensors during routine maintenance
- Use OEM or high-quality aftermarket replacements
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Component Specifications
Overview
- Type
- Oxygen Sensor
- Configuration
- Upstream and Downstream
- Platform
- GM Epsilon II
- Material
- Zirconia Ceramic
- Location
- Exhaust System
Dimensions
- Length
- 2.5 in (63.5 mm)
- Diameter
- 0.75 in (19.05 mm)
- Thread Size
- M18 x 1.5
- Wire Length
- 12 in (304.8 mm)
- Operating Temperature
- -40°F to 1600°F (-40°C to 871°C)
- Weight
- 0.2 lbs (90.7 g)
- Voltage Range
- 0.1V to 0.9V
Materials
- Sensor Body
- Stainless Steel
- Sensing Element
- Zirconia Ceramic
- Wiring
- High-Temperature Silicone
- Connector
- Thermoplastic
Features
- Performance
-
- Fast response time
- Wide operating temperature range
- Accurate air-fuel ratio measurement
- Durability
-
- Corrosion-resistant materials
- High-temperature tolerance
- Long service life
- Compatibility
-
- OBD-II compliant
- GM-specific calibration
- Direct-fit replacement
- installation
-
- Standard thread size
- Integrated wiring harness
- Tool-free connector
- Monitoring
-
- Real-time emissions data
- Onboard diagnostics
- Fault detection
Safety Features
- Thermal Protection
-
- Heat-resistant casing
- Thermal insulation
- Electrical Safety
-
- Short-circuit protection
- Waterproof connector
- Emissions Compliance
-
- EPA compliant
- CARB certified
Comfort Features
- Ease Of installation
-
- Pre-installed gasket
- Color-coded wiring
- Maintenance
-
- Self-diagnostic capabilities
- Easy access location
- Noise Reduction
-
- Vibration damping
- Quiet operation
Accessories
- installation Tools
-
- O2 sensor socket
- Anti-seize compound
- Wire crimper
- Replacement Parts
-
- Gasket
- Wiring harness
- Connector
- Diagnostic Tools
-
- OBD-II scanner
- Multimeter
- Signal tester
Maintenance
- Service interval
- 100,000 miles
- Service Items
-
- Inspect for contamination
- Check wiring integrity
- Test signal output
- Clean sensor tip
- Replace if faulty
- Maintenance Notes
- Avoid using silicone-based products near the sensor.
Warranty
- Standard Warranty
- Miles: 36,000Years: 3Coverage: Parts and labor
- Emissions Warranty
- Miles: 80,000Years: 8Coverage: Emissions-related components
- Extended Warranty
- Miles: 100,000Years: 5Coverage: Manufacturer defects
- Warranty Terms
- Must follow recommended maintenance schedule.
Production Details
- Manufacturer
- Delphi Technologies
- Manufacturing Process
-
- Precision machining
- Ceramic sintering
- Automated assembly
- Quality Control
- Testing: Thermal cycling, Signal accuracy, Durability testingCertifications: ISO 9001, TS 16949
- Sustainability Practices
-
- Recyclable materials
- Energy-efficient production
- Waste reduction
- Production Metrics
- Units Per Day: 10,000Defect Rate: 0.01%
Service Information for emissions_sensors Service
Maintenance and service requirements specific to this component
- Inspect sensor wiring
- Check for exhaust leaks
- Test sensor response
- Clean sensor tip
Ensure no contaminants are present.
- Verify signal output
- Inspect connector
- Check for corrosion
- Test voltage range
Use proper diagnostic tools.
- Replace sensor if necessary
- Inspect exhaust system
- Perform full diagnostics
- Reset ECU if replaced
Follow manufacturer's replacement guidelines.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the emissions sensors in the 2017-2019 Buick LaCrosse?
What are the technical specifications of the emissions sensors in the 2017-2019 Buick LaCrosse?
The emissions sensors in the 2017-2019 Buick LaCrosse include oxygen sensors, NOx sensors, and a coolant temperature sensor. The oxygen sensors are narrow-band or wide-band types, compatible with the 3.6L V6 engine. They operate within a temperature range of -40°F to 250°F and are designed to meet stringent emissions standards. Compatibility is ensured with the vehicle's ECM system for accurate readings and optimal performance.
Q2 What are the maintenance requirements for the emissions sensors?
What are the maintenance requirements for the emissions sensors?
Maintenance for emissions sensors in the 2017-2019 Buick LaCrosse should follow the recommended schedule. Inspect oxygen sensors every 30,000 miles and replace them every 100,000 miles. Check NOx sensors every 50,000 miles. Clean the coolant temperature sensor as needed and ensure all electrical connections are secure. Refer to the owner's manual for specific guidelines to maintain system efficiency.
Q3 How do I install or replace an emissions sensor?
How do I install or replace an emissions sensor?
To replace an emissions sensor, start by disconnecting the battery. Locate the sensor, typically near the exhaust manifold for oxygen sensors or engine block for coolant sensors. Remove the mounting bolt, disconnect the electrical connector, and extract the sensor. Install the new sensor, ensuring it's seated properly, and reconnect the electrical connector. Tighten the mounting bolt and reconnect the battery. Use a scan tool to clear any fault codes after installation.
Q4 How do I troubleshoot common issues with emissions sensors?
How do I troubleshoot common issues with emissions sensors?
If the Check Engine Light illuminates, use a scan tool to retrieve fault codes. Common codes include P0130 (oxygen sensor circuit malfunction) or P0155 (NOx sensor malfunction). Check for loose connections, damage, or corrosion. Test sensor resistance and voltage. Compare readings to specifications. Replace faulty sensors and clear codes to ensure proper system operation.
Q5 How can I optimize the performance of emissions sensors?
How can I optimize the performance of emissions sensors?
Optimize emissions sensor performance by ensuring proper vehicle maintenance, such as regular tune-ups and using the correct fuel type. Avoid extreme driving conditions that could damage sensors. Keep the engine well-maintained to prevent contamination. Use high-quality replacement parts and follow manufacturer guidelines for installation and calibration to maintain emissions efficiency and performance.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2017-2019 Buick LaCrosse Service Manual
Coming SoonComprehensive guide covering emissions systems, sensor diagnostics, and replacement procedures.
Technical Bulletin: Emissions Sensor Update
Coming SoonDetails updates and troubleshooting for emissions sensors, including software updates and fault code resolution.
Genuine GM Parts Catalog
Coming SoonCatalog of emissions sensors and accessories compatible with the 2017-2019 Buick LaCrosse.
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