Subaru Subaru Impreza 2011-2016 Emissions & Sensors Specifications
Explore detailed specifications for the emissions sensors in the 2011-2016 Subaru Impreza, including O2 sensors, catalytic converters, and EGR systems. Ideal for diagnostics, repairs, and upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors in the 2011-2016 Subaru Impreza. It is designed to assist users in understanding the functionality, components, and maintenance of these sensors. The guide includes sections on sensor types, diagnostic procedures, and common issues, along with a quick reference for key specifications. Use the search and navigation instructions to efficiently locate the information you need.
How to Use
Use the search function to quickly find specific terms or topics related to emissions sensors. Enter keywords such as 'O2 sensor' or 'diagnostic codes' in the search bar to locate relevant sections and details.
Navigate through the document using the section titles and subsections. Click on a section title to expand its content and view detailed information. Use the quick reference table for a summary of key specifications.
Key Specifications
O2 Sensor Voltage Range
0.1-0.9 V
Catalytic Converter Efficiency
95-99%
Sensor Operating Temperature
600-800°F
Diagnostic Trouble Codes
P0420, P0130
Sensor Replacement Interval
60,000-90,000 miles
Available Specifications
Sensor Types and Functions
This section covers the different types of emissions sensors used in the 2011-2016 Subaru Impreza, including their functions and locations. Understanding these sensors is crucial for diagnosing and maintaining the vehicle's emissions system.
Sensor Types and Functions
This section covers the different types of emissions sensors used in the 2011-2016 Subaru Impreza, including their functions and locations. Understanding these sensors is crucial for diagnosing and maintaining the vehicle's emissions system.
Oxygen (O2) Sensors
- Located in the exhaust system before and after the catalytic converter.
- Monitors the oxygen content in the exhaust gases.
- Provides feedback to the engine control unit (ECU) for optimal fuel mixture.
- Helps ensure compliance with emissions standards.
- Can deteriorate over time and require replacement.
- Typically has a lifespan of 60,000-90,000 miles.
Catalytic Converter Sensors
- Monitors the efficiency of the catalytic converter.
- Detects harmful emissions such as CO, NOx, and hydrocarbons.
- Sends data to the ECU to adjust engine performance.
- Essential for passing emissions tests.
- Can trigger a check engine light if faulty.
- Should be inspected during regular maintenance.
Diagnostic Procedures
This section provides step-by-step instructions for diagnosing issues with emissions sensors in the 2011-2016 Subaru Impreza. Proper diagnostic procedures can help identify and resolve problems efficiently.
Diagnostic Procedures
This section provides step-by-step instructions for diagnosing issues with emissions sensors in the 2011-2016 Subaru Impreza. Proper diagnostic procedures can help identify and resolve problems efficiently.
Using OBD-II Scanner
- Connect an OBD-II scanner to the vehicle's diagnostic port.
- Retrieve diagnostic trouble codes (DTCs) related to emissions sensors.
- Interpret the codes to identify specific sensor issues.
- Clear the codes after repairs to verify the fix.
- Use the scanner to monitor real-time sensor data.
- Ensure the scanner is compatible with Subaru systems.
Visual Inspection
- Check for physical damage to sensors and wiring.
- Inspect for loose or corroded connections.
- Look for signs of exhaust leaks near sensors.
- Verify proper installation and alignment of sensors.
- Ensure the catalytic converter is not clogged or damaged.
- Replace any visibly worn or damaged components.
Common Issues and Solutions
This section outlines common problems associated with emissions sensors in the 2011-2016 Subaru Impreza and provides practical solutions to address them.
Common Issues and Solutions
This section outlines common problems associated with emissions sensors in the 2011-2016 Subaru Impreza and provides practical solutions to address them.
Check Engine Light
- Often triggered by faulty O2 sensors.
- Can be caused by a failing catalytic converter.
- May indicate a rich or lean fuel mixture.
- Use an OBD-II scanner to identify the specific issue.
- Replace defective sensors to resolve the problem.
- Clear the light after repairs to confirm the fix.
Poor Fuel Economy
- Can result from malfunctioning emissions sensors.
- Incorrect sensor readings may cause inefficient fuel usage.
- Check and replace faulty O2 sensors.
- Ensure the catalytic converter is functioning properly.
- Monitor fuel trim levels using diagnostic tools.
- Regular maintenance can prevent this issue.
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Component Specifications
Overview
- Type
- Oxygen Sensor (O2)
- Configuration
- Dual-sensor system
- Platform
- Wideband zirconia sensor
- Material
- Ceramic electrolyte
- Location
- Exhaust manifold and catalytic converter
Dimensions
- Length
- 2.36 inches (60 mm)
- Diameter
- 0.79 inches (20 mm)
- Thread Size
- M18 x 1.5
- Wire Length
- 23.62 inches (600 mm)
- Operating Temperature
- -40 to 900°C (-40 to 1652°F)
- Voltage Range
- 0.1 to 0.9 volts
- Response Time
- 0.1 seconds
Materials
- Sensor Element
- Zirconium dioxide
- Housing
- Stainless steel
- Sealing Ring
- Polytetrafluoroethylene (PTFE)
- Wiring
- High-temperature silicone
Features
- Performance
-
- Real-time air-fuel ratio monitoring
- Wideband detection for precise measurements
- Fast response time
- Durability
-
- Resistant to high temperatures
- Corrosion-resistant housing
- Long operational lifespan
- integration
-
- Compatible with ECU systems
- Self-diagnostic capabilities
- Plug-and-play installation
- Efficiency
-
- Low power consumption
- Minimal signal interference
- Accurate under varying conditions
Safety Features
- Overheat Protection
-
- Automatic shutdown at extreme temperatures
- Thermal insulation
- Electrical Safety
-
- Short-circuit protection
- Waterproof connectors
- Chemical Resistance
- Resistant to exhaust gases and contaminants
Comfort Features
- installation
-
- Standardized thread size
- Clear wiring labels
- Maintenance
-
- Easy access for replacement
- Self-cleaning function
- Noise Reduction
- Minimal signal noise
Accessories
- installation
-
- Sensor socket wrench
- Anti-seize compound
- Wire harness connector
- Testing
-
- OBD-II scanner
- Multimeter
- Signal simulator
- Replacement
-
- New sealing ring
- Protective cap
- Extension harness
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Service Items
-
- Inspect for contamination
- Check wiring integrity
- Test signal output
- Replace if faulty
- Clean sensor tip
- Maintenance Notes
- Avoid using silicone-based sealants near the sensor
Warranty
- Standard Warranty
- Miles: 36,000Years: 3Coverage: Manufacturer defects
- Extended Warranty
- Miles: 100,000Years: 8Coverage: Sensor failure
- Labor Warranty
- Miles: 12,000Years: 1Coverage: Installation errors
- Warranty Terms
- Excludes damage from improper installation or environmental factors
Production Details
- Manufacturer
- Denso Corporation
- Manufacturing Process
-
- Precision ceramic molding
- High-temperature sintering
- Automated assembly
- Quality Control
- Testing: Signal accuracy, Temperature resistance, DurabilityCertifications: ISO 9001, OEM standards
- Sustainability Practices
-
- Recyclable materials
- Low-emission production
- Energy-efficient processes
- Production Metrics
- Annual Output: 5 million unitsDefect Rate: < 0.1%
Service Information for emissions_sensors Service
Maintenance and service requirements specific to emissions sensors
- Inspect sensor wiring
- Check for contamination
- Test signal output
- Clean sensor tip
Ensure proper torque when reinstalling
- Replace sensor if faulty
- Inspect exhaust system for leaks
- Verify ECU communication
- Test air-fuel ratio accuracy
Use anti-seize compound on threads
- Replace sensor as preventive maintenance
- Inspect catalytic converter efficiency
- Perform full emissions system check
- Test sensor response time
Ensure proper alignment during installation
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are the emissions sensors compatible with all 2011-2016 Subaru Impreza models?
Are the emissions sensors compatible with all 2011-2016 Subaru Impreza models?
The emissions sensors for the 2011-2016 Subaru Impreza are designed to be compatible with all trim levels and engine configurations within this model range. These sensors are specifically calibrated for the 2.0L and 2.5L engines, ensuring accurate emissions monitoring. However, it is recommended to verify the part number with your vehicle's VIN to ensure compatibility, as minor variations may exist between model years.
Q2 What maintenance is required for emissions sensors in the 2011-2016 Subaru Impreza?
What maintenance is required for emissions sensors in the 2011-2016 Subaru Impreza?
Emissions sensors in the 2011-2016 Subaru Impreza require minimal maintenance. Regularly inspect the sensors for damage or contamination, especially after driving in harsh conditions. Ensure the wiring harness and connectors are secure and free of corrosion. The sensors are designed to last the lifetime of the vehicle, but if a check engine light appears, diagnostic testing is recommended to confirm sensor functionality.
Q3 How do I install or replace emissions sensors in a 2011-2016 Subaru Impreza?
How do I install or replace emissions sensors in a 2011-2016 Subaru Impreza?
To install or replace emissions sensors, first, locate the sensor near the exhaust system. Disconnect the negative battery terminal for safety. Remove the electrical connector and unscrew the sensor using an appropriate wrench. Install the new sensor by threading it in by hand to avoid cross-threading, then tighten to the specified torque. Reconnect the electrical connector and battery terminal. Clear any error codes using an OBD-II scanner.
Q4 What should I do if the emissions sensor triggers a check engine light?
What should I do if the emissions sensor triggers a check engine light?
If the emissions sensor triggers a check engine light, use an OBD-II scanner to retrieve the error code. Common codes include P0420 (catalyst efficiency) or P0135 (oxygen sensor heater circuit). Inspect the sensor and wiring for damage or corrosion. If no visible issues are found, test the sensor's voltage and resistance using a multimeter. Replace the sensor if it fails these tests or if the error code persists after clearing.
Q5 How can I optimize the performance of emissions sensors in my 2011-2016 Subaru Impreza?
How can I optimize the performance of emissions sensors in my 2011-2016 Subaru Impreza?
To optimize emissions sensor performance, ensure your vehicle's engine is properly tuned and running efficiently. Use high-quality fuel and replace the air filter regularly. Avoid short trips, as the sensor may not reach optimal operating temperature. Periodically clean the sensor's exterior to prevent contamination. If performance issues persist, consider upgrading to a high-performance sensor designed for enhanced durability and accuracy.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2011-2016 Subaru Impreza Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and diagnostics for the 2011-2016 Subaru Impreza, including emissions system details.
Technical Service Bulletin: Emissions Sensor Updates
Coming SoonDetails updates and fixes for emissions sensors in 2011-2016 Subaru Impreza models, including part number changes and calibration adjustments.
Subaru Impreza Parts and Accessories Catalog
Coming SoonCatalog listing OEM and aftermarket parts for the 2011-2016 Subaru Impreza, including emissions sensors and related components.
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