Infiniti I35 2002-2004 Emissions & Sensors Specifications
Explore the detailed specifications of emissions sensors for the 2002-2004 Infiniti I35. Learn about sensor types, functions, and compatibility to diagnose, repair, or upgrade your vehicle’s emissions system.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors used in the 2002-2004 Infiniti I35. It is designed to assist technicians, engineers, and enthusiasts in understanding the functionality, maintenance, and troubleshooting of these sensors. Use the search and navigation instructions to quickly locate specific details or browse through the sections for comprehensive insights.
How to Use
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Scroll through the sections or use the table of contents to jump to specific topics. Each section is organized into subsections with detailed technical points for easy reference.
Key Specifications
O2 Sensor Voltage Range
0.1V to 0.9V
Catalytic Converter Temp Range
-40°C to 900°C
MAF Sensor Voltage
12V
O2 Sensor Replacement Interval
60,000-90,000 miles
Catalytic Converter Sensor Interval
100,000 miles
Available Specifications
Oxygen Sensors
This section covers the oxygen (O2) sensors used in the 2002-2004 Infiniti I35. These sensors are critical for monitoring the air-fuel ratio and ensuring optimal engine performance and emissions control. Learn about their location, functionality, and common issues.
Oxygen Sensors
This section covers the oxygen (O2) sensors used in the 2002-2004 Infiniti I35. These sensors are critical for monitoring the air-fuel ratio and ensuring optimal engine performance and emissions control. Learn about their location, functionality, and common issues.
Front O2 Sensor
- Located before the catalytic converter
- Monitors exhaust gases for air-fuel ratio adjustments
- Voltage range: 0.1V to 0.9V
- Replacement interval: 60,000-90,000 miles
- Common issues: contamination or slow response time
Rear O2 Sensor
- Located after the catalytic converter
- Monitors catalytic converter efficiency
- Voltage range: 0.1V to 0.9V
- Replacement interval: 60,000-90,000 miles
- Common issues: failure due to heat exposure
Catalytic Converter Sensors
This section focuses on the sensors associated with the catalytic converter, which play a vital role in reducing harmful emissions. Understand their operation, maintenance, and troubleshooting tips.
Catalytic Converter Sensors
This section focuses on the sensors associated with the catalytic converter, which play a vital role in reducing harmful emissions. Understand their operation, maintenance, and troubleshooting tips.
Temperature Sensor
- Monitors catalytic converter temperature
- Prevents overheating and damage
- Operating range: -40°C to 900°C
- Replacement interval: 100,000 miles
- Common issues: sensor drift or failure
Efficiency Sensor
- Measures catalytic converter performance
- Sends data to the ECU for adjustments
- Voltage range: 0.1V to 1.0V
- Replacement interval: 100,000 miles
- Common issues: clogging or contamination
Mass Air Flow Sensor
This section provides details about the Mass Air Flow (MAF) sensor, which measures the amount of air entering the engine. Learn about its role in emissions control and how to maintain it.
Mass Air Flow Sensor
This section provides details about the Mass Air Flow (MAF) sensor, which measures the amount of air entering the engine. Learn about its role in emissions control and how to maintain it.
MAF Sensor Specifications
- Located in the air intake system
- Measures air flow in grams per second
- Operating voltage: 12V
- Replacement interval: 50,000-75,000 miles
- Common issues: dirt buildup or electrical failure
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Component Specifications
Overview
- Type
- Oxygen (O2) Sensors
- Configuration
- Dual-sensor setup (upstream and downstream)
- Platform
- Integrated with ECU for real-time monitoring
- Material
- Zirconia ceramic sensing element
- Location
- Exhaust manifold and catalytic converter
Dimensions
- Sensor Length
- 4.5 inches (114.3 mm)
- Thread Diameter
- 0.625 inches (15.875 mm)
- Wire Length
- 24 inches (609.6 mm)
- Probe Length
- 1.25 inches (31.75 mm)
- Hex Size
- 0.875 inches (22.225 mm)
- Operating Temperature Min
- -40°F (-40°C)
- Operating Temperature Max
- 1562°F (850°C)
Materials
- Sensing Element
- Zirconia ceramic with platinum electrodes
- Housing
- Stainless steel (304 grade)
- Wiring
- High-temperature silicone insulation
- Connector
- Thermoplastic with brass terminals
Features
- Performance
-
- Wideband air-fuel ratio detection
- Fast response time (less than 100ms)
- Self-diagnostic capability
- High-temperature resistance
- integration
-
- OBD-II compliant
- Direct ECU communication
- Real-time data transmission
- Compatible with Infiniti's proprietary software
- Durability
-
- Corrosion-resistant housing
- Sealed against moisture ingress
- Vibration-resistant design
- Extended service life (up to 100,000 miles)
- Environmental
-
- Low emissions design
- Recyclable materials
- Compliant with EPA standards
- Reduced fuel consumption
Safety Features
- Electrical
-
- Short-circuit protection
- Overvoltage protection
- Thermal
-
- High-temperature insulation
- Heat-resistant wiring
- Mechanical
-
- Anti-vibration mounting
- Sealed connector
Comfort Features
- installation
-
- Standardized thread size
- Pre-installed wiring harness
- Tool-free connector
- Maintenance
-
- Easy access for replacement
- Self-cleaning function
- Diagnostic trouble codes (DTCs)
Accessories
- installation Tools
-
- O2 sensor socket
- Anti-seize compound
- Wire crimping tool
- Replacement Parts
-
- Sensor gasket
- Wiring harness adapter
- Heat shield
- Diagnostic Tools
-
- OBD-II scanner
- Multimeter
- Infiniti-specific diagnostic software
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
- Avoid using silicone-based sealants near the sensor
Warranty
- Manufacturer Warranty
- Miles: 100,000Years: 8Coverage: Defects in materials and workmanship
- Emissions Warranty
- Miles: 80,000Years: 7Coverage: Federal emissions compliance
- Extended Warranty
- Miles: 120,000Years: 10Coverage: Optional extended coverage
- Warranty Terms
- Excludes damage from improper installation or contamination
Production Details
- Manufacturer
- NGK/NTK
- Manufacturing Process
-
- Precision ceramic molding
- Automated assembly
- Laser welding
- Quality Control
- Testing: Thermal cycling, Vibration testing, Electrical performance validationStandards: ISO 9001 certified, TS 16949 compliant
- Sustainability Practices
-
- Recycled stainless steel usage
- Low-energy manufacturing
- Waste reduction initiatives
- Production Metrics
- Annual Output: 2 million unitsDefect Rate: Less than 0.1%Lead Time: 4 weeks
Service Information for emissions_sensors Service
Maintenance and service requirements specific to oxygen sensors
- Inspect sensor wiring for damage
- Check for exhaust leaks near the sensor
- Test sensor response time using diagnostic tools
- Verify proper ECU communication
Early inspection can prevent catalytic converter damage
- Perform full sensor diagnostic
- Clean sensor threads and mounting area
- Replace sensor gasket if necessary
- Check for contamination or fouling
Use anti-seize compound during reinstallation
- Replace upstream and downstream sensors
- Inspect and replace wiring harness if needed
- Perform exhaust system pressure test
- Reset ECU and verify proper operation
Use OEM sensors for optimal performance and compatibility
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are the emissions sensors for the 2002-2004 Infiniti I35 compatible with other models?
Are the emissions sensors for the 2002-2004 Infiniti I35 compatible with other models?
The emissions sensors for the 2002-2004 Infiniti I35 are specifically designed for this model and may not be compatible with other vehicles. These sensors are calibrated to meet the exact emissions control requirements of the I35's engine and exhaust system. Always verify compatibility using the manufacturer's part number or consult a professional before attempting to use these sensors in other models.
Q2 What maintenance is required for the emissions sensors in the Infiniti I35?
What maintenance is required for the emissions sensors in the Infiniti I35?
Emissions sensors in the 2002-2004 Infiniti I35 require minimal maintenance but should be inspected during routine service intervals. Check for signs of wear, corrosion, or damage, and ensure the sensor connections are secure. Replace the sensors if they fail or trigger a check engine light. Regular engine tune-ups and using high-quality fuel can help prolong the sensors' lifespan.
Q3 How do I replace the emissions sensors in my Infiniti I35?
How do I replace the emissions sensors in my Infiniti I35?
To replace the emissions sensors in your 2002-2004 Infiniti I35, first, locate the faulty sensor(s) using a diagnostic tool. Disconnect the battery, then unplug the sensor's electrical connector. Use a wrench to remove the sensor from the exhaust system. Install the new sensor, ensuring it is properly tightened and the connector is securely attached. Reconnect the battery and clear any error codes using a diagnostic tool.
Q4 What should I do if my emissions sensor triggers a check engine light?
What should I do if my emissions sensor triggers a check engine light?
If your emissions sensor triggers a check engine light, first use an OBD-II scanner to retrieve the error code. Common issues include sensor failure, wiring problems, or exhaust leaks. Inspect the sensor and its connections for damage or corrosion. If the sensor is faulty, replace it. If the issue persists, consult a professional mechanic to diagnose and resolve the problem.
Q5 How can I optimize the performance of my Infiniti I35's emissions sensors?
How can I optimize the performance of my Infiniti I35's emissions sensors?
To optimize the performance of your Infiniti I35's emissions sensors, ensure your engine is well-maintained with regular oil changes, air filter replacements, and spark plug checks. Use high-quality fuel to reduce contaminants in the exhaust system. Avoid short trips that prevent the sensors from reaching optimal operating temperatures. Regularly inspect and clean the sensors to prevent buildup of debris or corrosion.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2002-2004 Infiniti I35 Service Manual
Coming SoonDetailed service manual covering all aspects of the Infiniti I35, including emissions system diagnostics, maintenance, and repair procedures.
Infiniti I35 Emissions System Technical Bulletin
Coming SoonTechnical service bulletin addressing common issues and updates related to the emissions system for the 2002-2004 Infiniti I35.
Infiniti I35 Parts and Accessories Catalog
Coming SoonComprehensive catalog listing all OEM parts and accessories for the 2002-2004 Infiniti I35, including emissions sensors and related components.
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