Infiniti G20 1999-2002 Emissions & Sensors Specifications
Explore the detailed specifications of emissions sensors for the 1999-2002 Infiniti G20. This guide covers sensor types, locations, functions, and compatibility, making it a valuable resource for diagnostics, repairs, and maintenance.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors used in the 1999-2002 Infiniti G20. It is designed to assist technicians, engineers, and enthusiasts in understanding the components, functionality, and maintenance of the emissions system. Use the search functionality to quickly locate specific terms or navigate through sections to find comprehensive details about each major component.
How to Use
To search for specific terms, use the search bar at the top of the document. Enter keywords related to emissions sensors or their components, and the results will highlight relevant sections.
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Key Specifications
Oxygen Sensor Voltage Range
0.1-0.9 V
Catalytic Converter Operating Temp
400-600°C
EGR Valve Flow Rate
5-10% of total exhaust
Sensor Response Time
< 100 ms
Emission Compliance Standard
LEV I
Available Specifications
Oxygen Sensors
This section covers the oxygen sensors used in the Infiniti G20, which are critical for monitoring and adjusting the air-fuel mixture to ensure optimal combustion and reduce emissions.
Oxygen Sensors
This section covers the oxygen sensors used in the Infiniti G20, which are critical for monitoring and adjusting the air-fuel mixture to ensure optimal combustion and reduce emissions.
Sensor Types
- Upstream oxygen sensor located before the catalytic converter
- Downstream oxygen sensor located after the catalytic converter
- Heated oxygen sensors for faster warm-up and improved accuracy
- Zirconia-based sensors for precise voltage output
Functionality
- Monitors oxygen levels in exhaust gases
- Sends voltage signals to the Engine Control Unit (ECU)
- Helps maintain stoichiometric air-fuel ratio
- Detects catalytic converter efficiency
Catalytic Converter Sensors
This section details the sensors associated with the catalytic converter, which play a vital role in ensuring the converter operates efficiently to reduce harmful emissions.
Catalytic Converter Sensors
This section details the sensors associated with the catalytic converter, which play a vital role in ensuring the converter operates efficiently to reduce harmful emissions.
Temperature Sensors
- Monitors catalytic converter temperature
- Prevents overheating and damage
- Sends data to the ECU for real-time adjustments
- Ensures optimal operating conditions
Efficiency Monitoring
- Uses downstream oxygen sensor for feedback
- Detects catalyst degradation or failure
- Triggers check engine light for diagnostics
- Ensures compliance with emission standards
Exhaust Gas Recirculation (EGR) System
This section explains the sensors and components of the EGR system, which reduces nitrogen oxide emissions by recirculating a portion of exhaust gases back into the engine cylinders.
Exhaust Gas Recirculation (EGR) System
This section explains the sensors and components of the EGR system, which reduces nitrogen oxide emissions by recirculating a portion of exhaust gases back into the engine cylinders.
EGR Valve Sensors
- Monitors EGR valve position and flow rate
- Ensures proper recirculation of exhaust gases
- Prevents engine knocking and improves efficiency
- Sends feedback to the ECU for adjustments
System Diagnostics
- Detects EGR valve blockages or malfunctions
- Triggers diagnostic trouble codes (DTCs)
- Helps maintain emission compliance
- Ensures smooth engine operation
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Component Specifications
Overview
- Type
- Oxygen Sensor
- Configuration
- Upstream and Downstream
- Platform
- OBD-II compliant
- Material
- Zirconia ceramic
- Location
- Exhaust manifold and catalytic converter
Dimensions
- Length
- 2.5 inches (6.35 cm)
- Diameter
- 0.75 inches (1.9 cm)
- Thread Size
- M18 x 1.5
- Wire Length
- 24 inches (61 cm)
- Sensor Tip Diameter
- 0.25 inches (0.64 cm)
- Mounting Depth
- 1.5 inches (3.81 cm)
- Weight
- 0.2 lbs (90.7 g)
Materials
- Sensor Body
- Stainless steel
- Sensor Element
- Zirconia ceramic
- Wire insulation
- High-temperature silicone
- Connector
- Thermoplastic
Features
- Performance
-
- Heated sensor for quick response
- Wideband oxygen sensing
- High accuracy in lean/rich conditions
- Durability
-
- Resistant to exhaust gas corrosion
- High-temperature tolerance up to 900°F (482°C)
- Sealed connectors for moisture protection
- Compatibility
-
- OBD-II compliant
- Direct fit for Infiniti G20
- Works with factory ECU
- installation
-
- Pre-threaded for easy installation
- Integrated wiring harness
- Tool-free connector
Safety Features
- Thermal Protection
-
- Heat shield for wiring
- Thermal-resistant materials
- Electrical Safety
-
- Short-circuit protection
- Polarity protection
- Environmental
-
- Lead-free construction
- RoHS compliant
Comfort Features
- Operation
-
- Quiet operation
- Smooth signal output
- Maintenance
-
- Easy to access
- Minimal calibration required
- Longevity
-
- Extended sensor life
- Reliable performance
Accessories
- installation
-
- Anti-seize compound
- Sensor socket tool
- Wire loom
- Replacement
-
- Spare connector
- Extension harness
- Heat shrink tubing
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Service Items
-
- Inspect sensor wiring
- Check for exhaust leaks
- Test sensor output
- Clean sensor tip
- Replace if faulty
- Maintenance Notes
- Avoid using silicone-based products near the sensor.
Warranty
- Standard Warranty
- Miles: 24,000Years: 2Coverage: Defects in materials and workmanship
- Extended Warranty
- Miles: 60,000Years: 5Coverage: Sensor failure
- Emissions Warranty
- Miles: 80,000Years: 8Coverage: Emissions-related components
- Warranty Terms
- Proof of purchase and proper installation required.
Production Details
- Manufacturer
- Infiniti/Nissan
- Manufacturing Process
-
- Precision machining
- Ceramic sintering
- Automated assembly
- Quality Control
- Testing: Thermal cycling, Signal accuracy, Durability testingCertifications: ISO 9001, OBD-II compliance
- Sustainability Practices
-
- Recycling of materials
- Energy-efficient production
- Reduced emissions
- Production Metrics
- Units Per Year: 50,000Defect Rate: 0.1%
Service Information for emissions_sensors Service
Maintenance and service requirements specific to emissions sensors
- Inspect sensor wiring
- Check for exhaust leaks
- Test sensor output
- Clean sensor tip
Ensure no damage to wiring during inspection.
- Replace sensor if faulty
- Test signal accuracy
- Inspect connector for corrosion
- Check for proper mounting
Use anti-seize compound during replacement.
- Replace sensor as preventive maintenance
- Test entire emissions system
- Inspect wiring harness
- Verify ECU communication
Perform a full diagnostic scan for accurate results.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are the emissions sensors compatible with other Infiniti models?
Are the emissions sensors compatible with other Infiniti models?
The emissions sensors for the 1999-2002 Infiniti G20 are specifically designed for this model. While some components may share similarities with other Infiniti vehicles, compatibility is not guaranteed. Always verify part numbers with the manufacturer or a trusted supplier to ensure proper fit and functionality.
Q2 What is the maintenance schedule for the emissions sensors?
What is the maintenance schedule for the emissions sensors?
Emissions sensors typically require minimal maintenance. However, it is recommended to inspect them during routine vehicle servicing, such as oil changes or emissions testing. Cleaning the sensors and checking for corrosion or damage can help maintain optimal performance. Replace sensors if they show signs of wear or fail emissions tests.
Q3 How do I replace the emissions sensors in my Infiniti G20?
How do I replace the emissions sensors in my Infiniti G20?
To replace the emissions sensors, first, locate the faulty sensor(s) near the exhaust system. Disconnect the electrical connector and use an appropriate wrench to remove the sensor. Install the new sensor by threading it into place and tightening it to the specified torque. Reconnect the electrical connector and ensure it is secure.
Q4 What should I do if my emissions sensor fails?
What should I do if my emissions sensor fails?
If your emissions sensor fails, first check for error codes using an OBD-II scanner. Inspect the sensor for visible damage or corrosion. Clean the sensor if necessary. If the issue persists, replace the sensor. Ensure the exhaust system is free of leaks, as these can also cause sensor malfunctions.
Q5 How can I optimize the performance of my emissions sensors?
How can I optimize the performance of my emissions sensors?
To optimize performance, ensure your vehicle’s engine is properly tuned and the exhaust system is in good condition. Use high-quality fuel and avoid short trips that prevent the engine from reaching optimal operating temperature. Regularly inspect and clean the sensors to prevent buildup that can impair their function.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1999-2002 Infiniti G20 Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and technical specifications for the Infiniti G20, including emissions system details.
Emissions Sensor Technical Bulletin
Coming SoonOfficial bulletin addressing common issues, updates, and best practices for emissions sensors in Infiniti vehicles.
Infiniti G20 Parts Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts, including emissions sensors, for the 1999-2002 Infiniti G20.
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