Subaru Subaru Impreza 2017-present Emissions & Sensors Specifications
Explore detailed specifications for emissions sensors in the 2017-Present Subaru Impreza. Learn about sensor types, locations, functions, and compatibility for diagnostics, repairs, and performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors in the 2017-Present Subaru Impreza. It is designed to assist users in understanding the functionality, maintenance, and troubleshooting of these sensors. The content is organized into sections for easy navigation, with subsections breaking down specific aspects of the emissions system. Use the search and navigation instructions to quickly find relevant information.
How to Use
Use the search bar to enter keywords related to emissions sensors, such as 'O2 sensor' or 'catalytic converter'. Results will highlight relevant sections and subsections.
Scroll through the document or use the table of contents to jump to specific sections. Each section is divided into subsections for detailed information.
Key Specifications
O2 Sensor Voltage Range
0.1-0.9 V
Catalytic Converter Efficiency
≥95%
Sensor Operating Temperature
-40°C to 900°C
Sensor Lifespan
60,000-90,000 miles
Emissions Compliance
EPA Tier 3, Euro 6
Available Specifications
Emissions Sensor Types
This section covers the different types of emissions sensors used in the 2017-Present Subaru Impreza, including their roles and locations within the vehicle. Learn about the primary sensors that monitor exhaust gases and ensure compliance with emissions standards.
Emissions Sensor Types
This section covers the different types of emissions sensors used in the 2017-Present Subaru Impreza, including their roles and locations within the vehicle. Learn about the primary sensors that monitor exhaust gases and ensure compliance with emissions standards.
Oxygen (O2) Sensors
- Located upstream and downstream of the catalytic converter
- Monitor oxygen levels in exhaust gases
- Provide feedback to the engine control unit (ECU) for optimal fuel mixture
- Typically have a lifespan of 60,000-90,000 miles
- Heated for faster response times
- Critical for reducing harmful emissions
Catalytic Converter Sensors
- Monitor the efficiency of the catalytic converter
- Detect changes in exhaust gas composition
- Trigger check engine light if efficiency drops below threshold
- Integrated with O2 sensors for precise monitoring
- Help maintain compliance with emissions regulations
Sensor Maintenance
This section provides guidance on maintaining emissions sensors to ensure optimal performance and longevity. Learn about common issues, diagnostic tips, and replacement procedures.
Sensor Maintenance
This section provides guidance on maintaining emissions sensors to ensure optimal performance and longevity. Learn about common issues, diagnostic tips, and replacement procedures.
Diagnostic Tips
- Use an OBD-II scanner to read error codes
- Check for loose or corroded wiring connections
- Inspect sensors for physical damage or contamination
- Monitor live data for abnormal readings
- Replace sensors if error codes persist
Replacement Procedures
- Ensure the engine is cool before starting
- Disconnect the battery to prevent electrical issues
- Use a specialized sensor socket for removal
- Apply anti-seize compound to new sensor threads
- Reconnect wiring and test the system
Emissions Compliance
This section explains how the emissions sensors in the 2017-Present Subaru Impreza contribute to meeting environmental regulations. Understand the role of these sensors in reducing pollutants and ensuring vehicle compliance.
Emissions Compliance
This section explains how the emissions sensors in the 2017-Present Subaru Impreza contribute to meeting environmental regulations. Understand the role of these sensors in reducing pollutants and ensuring vehicle compliance.
Regulatory Standards
- Complies with EPA Tier 3 emissions standards
- Meets Euro 6 emissions regulations in applicable markets
- Reduces nitrogen oxides (NOx) and carbon monoxide (CO) emissions
- Supports Subaru's commitment to environmental sustainability
Environmental Impact
- Reduces greenhouse gas emissions
- Improves air quality by minimizing pollutants
- Supports fuel efficiency and reduced carbon footprint
- Aligns with global emissions reduction goals
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Component Specifications
Overview
- Type
- Oxygen (O2) and Nitrogen Oxide (NOx) sensors
- Configuration
- Dual-sensor system (upstream and downstream)
- Platform
- Integrated with Subaru Engine Control Unit (ECU)
- Material
- High-temperature ceramic and stainless steel
- Location
- Exhaust manifold and catalytic converter
Dimensions
- Sensor Length
- 4.72 inches (120 mm)
- Sensor Diameter
- 0.98 inches (25 mm)
- Thread Size
- M18 x 1.5
- Cable Length
- 23.62 inches (600 mm)
- Operating Temperature
- -40°F to 1562°F (-40°C to 850°C)
- Weight
- 0.44 lbs (200 g)
- Voltage Range
- 0.1V to 0.9V
Materials
- Sensor Element
- Zirconium dioxide ceramic
- Protective Sheath
- Stainless steel 304
- Wiring Insulation
- High-temperature silicone
- Connector Housing
- Thermoplastic
Features
- Performance
-
- Real-time exhaust gas analysis
- Wideband oxygen sensing
- Fast response time (<100ms)
- High accuracy (±1% of reading)
- Durability
-
- Resistant to thermal shock
- Corrosion-resistant materials
- Sealed against moisture ingress
- Vibration-resistant design
- integration
-
- Direct ECU communication
- Onboard diagnostics (OBD-II)
- Self-diagnostic capabilities
- Adaptive learning algorithms
- Environmental
-
- Compliant with Euro 6 and EPA Tier 3 standards
- Low power consumption
- Recyclable materials
- Reduced emissions output
Safety Features
- Electrical Safety
-
- Short-circuit protection
- Overvoltage protection
- Thermal Protection
-
- Automatic shutdown at extreme temperatures
- Heat-resistant shielding
- Fail-Safe
-
- Default limp mode activation
- Error code generation
Comfort Features
- Noise Reduction
-
- Vibration-dampening mounts
- Quiet operation
- installation
-
- Tool-free connector
- Pre-calibrated sensor
- Maintenance
-
- Easy access design
- Self-cleaning function
Accessories
- installation Tools
-
- O2 sensor socket
- Anti-seize compound
- Wire harness clips
- Replacement Parts
-
- Sensor gaskets
- Protective caps
- Extension harness
- Diagnostic Tools
-
- OBD-II scanner
- Multimeter
- Sensor simulator
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Service Items
-
- Inspect sensor wiring
- Check for exhaust leaks
- Test sensor response time
- Clean sensor threads
- Verify ECU communication
- Maintenance Notes
- Use only OEM or equivalent sensors for replacement
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Defects in materials and workmanship
- Emissions
- Miles: 80,000Years: 8Coverage: Sensor performance and emissions compliance
- Extended
- Miles: 100,000Years: 10Coverage: Available through Subaru Extended Warranty
- Terms
- Warranty void if non-OEM parts are used or improper installation
Production Details
- Manufacturer
- Denso Corporation
- Manufacturing Process
-
- Precision ceramic molding
- Automated assembly
- Laser welding
- Quality testing under simulated conditions
- Quality Control
- Testing: Thermal cycling, Vibration resistance, Electrical performanceCertifications: ISO 9001, ISO 14001, TS 16949
- Sustainability Practices
-
- Recycled materials in packaging
- Energy-efficient manufacturing
- Waste reduction initiatives
- Production Metrics
- Annual Output: 2 million unitsDefect Rate: <0.01%Lead Time: 4 weeks
Service Information for emissions_sensors Service
Maintenance and service requirements specific to emissions sensors
- Inspect sensor wiring for damage
- Check connector for corrosion
- Verify sensor response time
- Test ECU communication
Use only approved diagnostic tools
- Perform full sensor diagnostic
- Check for exhaust leaks
- Clean sensor threads
- Replace if response time exceeds specifications
Apply anti-seize compound during reinstallation
- Replace both upstream and downstream sensors
- Inspect wiring harness
- Update ECU software
- Perform emissions system test
Recommended to replace both sensors simultaneously
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the compatibility requirements for emissions sensors in the 2017-Present Subaru Impreza?
What are the compatibility requirements for emissions sensors in the 2017-Present Subaru Impreza?
The emissions sensors for the 2017-Present Subaru Impreza are designed to be compatible with the vehicle's specific engine management system. These sensors are tailored for the 2.0L FB20 engine and are compatible with both manual and automatic transmissions. Ensure the sensor part numbers match the OEM specifications (e.g., 22690AA630 for the oxygen sensor) to maintain proper functionality and compliance with emissions standards.
Q2 What maintenance is required for emissions sensors in the 2017-Present Subaru Impreza?
What maintenance is required for emissions sensors in the 2017-Present Subaru Impreza?
Emissions sensors in the 2017-Present Subaru Impreza require periodic inspection and cleaning to ensure optimal performance. Check the sensors during routine service intervals (every 30,000 miles) for contamination or damage. Replace faulty sensors immediately to avoid triggering the check engine light or failing emissions tests. Use OEM or equivalent parts to maintain compatibility and performance.
Q3 How do I install or replace emissions sensors in the 2017-Present Subaru Impreza?
How do I install or replace emissions sensors in the 2017-Present Subaru Impreza?
To install or replace emissions sensors, first, locate the sensor (e.g., oxygen sensor near the exhaust manifold). Disconnect the electrical connector and use a sensor socket to remove the old sensor. Apply anti-seize compound to the threads of the new sensor and install it, tightening to the specified torque (30-40 Nm). Reconnect the electrical connector and clear any error codes using an OBD-II scanner.
Q4 What should I do if the emissions sensor in my 2017-Present Subaru Impreza malfunctions?
What should I do if the emissions sensor in my 2017-Present Subaru Impreza malfunctions?
If the emissions sensor malfunctions, first check for error codes using an OBD-II scanner. Common issues include contamination, wiring damage, or sensor failure. Inspect the sensor and wiring for damage, clean the sensor if necessary, and replace it if faulty. Ensure the replacement sensor matches OEM specifications to avoid further issues.
Q5 How can I optimize the performance of emissions sensors in my 2017-Present Subaru Impreza?
How can I optimize the performance of emissions sensors in my 2017-Present Subaru Impreza?
To optimize emissions sensor performance, ensure the engine is running efficiently by maintaining proper air-fuel ratios and using high-quality fuel. Regularly inspect and clean the sensors to prevent contamination. Avoid aftermarket modifications that could affect emissions readings. Use OEM or high-quality replacement parts to ensure accurate sensor readings and compliance with emissions standards.
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-Present Subaru Impreza Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and technical specifications for the 2017-Present Subaru Impreza, including emissions system details.
Technical Service Bulletin: Emissions Sensor Updates
Coming SoonLatest updates and fixes for emissions sensors in the 2017-Present Subaru Impreza, including part numbers and installation instructions.
Subaru Impreza Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM parts and accessories for the 2017-Present Subaru Impreza, including emissions sensors and related components.
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