Audi Audi S4 2016-present Emissions & Sensors Specifications
Comprehensive guide to the emissions sensors system in the 2016-Present Audi S4, including sensor types, diagnostic procedures, and maintenance tips for optimal performance and emissions compliance.
Overview Specifications
Comprehensive description of the emissions_sensors specifications for the 2016-Present Audi S4, including key features, measurements, and technical details. This section provides detailed insights into the emissions control system, sensor types, and their functionalities.
How to Use
Use the search bar to find specific emissions_sensors specifications by entering keywords such as 'O2 sensor', 'NOx sensor', or 'temperature range'. Use quotation marks for exact phrases.
Navigate through the emissions_sensors documentation by clicking on the section headers in the table of contents. Use the 'Quick Reference' section for immediate access to key specifications.
Key Specifications
O2 Sensor Voltage Range
0.1V to 0.9V
NOx Sensor Accuracy
±5% of reading
Exhaust Gas Temperature Range
Up to 1000°C
Exhaust Backpressure Range
0 kPa to 250 kPa
Catalyst Temperature Range
-40°C to 1000°C
Available Specifications
Oxygen (O2) Sensors
Details about the oxygen sensors used in the Audi S4 emissions system, including their placement, functionality, and technical specifications.
Oxygen (O2) Sensors
Details about the oxygen sensors used in the Audi S4 emissions system, including their placement, functionality, and technical specifications.
Front O2 Sensor
- Located in the exhaust manifold
- Measures oxygen levels in exhaust gases before the catalytic converter
- Operating temperature range: 300°C to 850°C
- Output voltage range: 0.1V to 0.9V
- Response time: <100ms
Rear O2 Sensor
- Located downstream of the catalytic converter
- Monitors catalytic converter efficiency
- Operating temperature range: 250°C to 800°C
- Output voltage range: 0.1V to 0.9V
- Response time: <150ms
Note: The rear O2 sensor is critical for detecting catalytic converter failure.
Nitrogen Oxide (NOx) Sensors
Information on the NOx sensors used to monitor and control nitrogen oxide emissions in the Audi S4.
Nitrogen Oxide (NOx) Sensors
Information on the NOx sensors used to monitor and control nitrogen oxide emissions in the Audi S4.
Primary NOx Sensor
- Located in the exhaust system before the SCR catalyst
- Measures NOx concentration in ppm (parts per million)
- Operating temperature range: 200°C to 900°C
- Accuracy: ±5% of reading
- Output signal: 0.5V to 4.5V
Secondary NOx Sensor
- Located after the SCR catalyst
- Verifies NOx reduction efficiency
- Operating temperature range: 200°C to 900°C
- Accuracy: ±5% of reading
- Output signal: 0.5V to 4.5V
Note: The secondary NOx sensor ensures compliance with emissions standards.
Temperature Sensors
Details about the temperature sensors integrated into the emissions system to monitor exhaust gas and component temperatures.
Temperature Sensors
Details about the temperature sensors integrated into the emissions system to monitor exhaust gas and component temperatures.
Exhaust Gas Temperature Sensor
- Located in the exhaust manifold
- Measures exhaust gas temperature up to 1000°C
- Accuracy: ±2% of reading
- Response time: <200ms
- Output signal: 0V to 5V
Catalyst Temperature Sensor
- Located on the catalytic converter
- Monitors catalyst temperature for optimal performance
- Operating range: -40°C to 1000°C
- Accuracy: ±2% of reading
- Output signal: 0V to 5V
Note: Critical for preventing catalyst overheating and damage.
Pressure Sensors
Information on the pressure sensors used to monitor exhaust backpressure and ensure proper emissions control.
Pressure Sensors
Information on the pressure sensors used to monitor exhaust backpressure and ensure proper emissions control.
Exhaust Backpressure Sensor
- Located in the exhaust system
- Measures backpressure in kPa (kilopascals)
- Operating range: 0 kPa to 250 kPa
- Accuracy: ±1.5% of full scale
- Output signal: 0.5V to 4.5V
Differential Pressure Sensor
- Located across the diesel particulate filter (DPF)
- Monitors DPF clogging levels
- Operating range: 0 kPa to 50 kPa
- Accuracy: ±1.5% of full scale
- Output signal: 0.5V to 4.5V
Note: Essential for DPF regeneration cycle management.
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Component Specifications
Overview
- Type
- Heated Exhaust Gas Oxygen Sensor
- Configuration
- Dual-wire
- Location
- Exhaust system, upstream and downstream of catalytic converter
- Manufacturer
- Continental AG
- Function
- Measure oxygen levels in exhaust gases
- Communication Protocol
- Controller Area Network (CAN) bus
Dimensions
- Length
- 3.5 in (8.9 cm)
- Width
- 0.75 in (1.9 cm)
- Height
- 1.25 in (3.2 cm)
- Mass
- 3.2 oz (90.7 g)
- Thread Diameter
- 0.75 in (19.05 mm)
- Electrical Connector Size
- 0.187 in (4.75 mm) terminal
- Operating Temperature Range
- -40°F to 2000°F (-40°C to 1093°C)
- Response Time
- Less than 100 ms
Materials
- Sensor Tip
- Ceramic with zirconium dioxide
- Housing
- Stainless steel
- Element
- Platinum
- Electrical Connector
- High-temperature plastic
- Wiring
- Heat-resistant insulation
Features
- Sensor Types
-
- Pre-catalytic converter oxygen sensor
- Post-catalytic converter oxygen sensor
- Wide-band oxygen sensor
- Monitoring Capabilities
-
- Exhaust gas oxygen level monitoring
- Catalytic converter efficiency monitoring
- Fuel trim monitoring
- System integration
-
- Engine control module (ECM) integration
- Onboard diagnostics (OBD-II) system
- Emissions control system
- Accuracy
-
- High-precision measurement
- Wide operating range
- Fast response time
- Durability
-
- High-temperature resistance
- Corrosion resistance
- Vibration resistance
- Connectivity
-
- CAN bus communication
- OBD-II compatibility
- Real-time data transmission
Safety Features
- Overheat Protection
- Thermal shutdown protection
- Fault Detection
-
- Internal error detection
- Signal plausibility check
- Circuit monitoring
- Error Coding
- Stores specific fault codes for diagnostics
- Self Diagnostics
- Continuous self-testing capability
Comfort Features
- Low Emissions
- Contributes to reduced emissions output
- Real Time Monitoring
- Provides live data for engine optimization
- Smooth Engine Operation
- Maintains stable engine performance
- Efficient Fuel Use
- Optimizes fuel efficiency
- Silent Operation
- No audible noise during operation
Accessories
- installation Kit
-
- Sensor socket
- Wiring harness connector
- Heat shield
- Wiring Harness
-
- High-temperature wiring
- Shielded cables
- Connectors
- Software Tools
-
- OBD-II scanner
- Sensor calibration tool
- Diagnostic software
Maintenance
- Service interval
- 60,000 miles (96,560 km) or 60 months
- Maintenance Items
-
- Sensor inspection
- Electrical connector cleaning
- Wiring harness check
- Fault code scanning
- Sensor calibration
Warranty
- Parts Warranty
- Miles: 48,000 milesYears: 4 yearsCoverage: Replacement of defective sensors
- Labor Warranty
- Miles: 48,000 milesYears: 4 yearsCoverage: Labor cost for sensor replacement
- Emissions Warranty
- Miles: 80,000 milesYears: 8 yearsCoverage: Emissions-related sensor repairs
- Extended Warranty
- Miles: 100,000 milesYears: 10 yearsCoverage: Extended protection for emissions sensors
Production Details
- Manufacturer info
- Name: Continental AGLocation: GermanyEstablished: 1871
- Manufacturing Process
-
- Sensor element production
- Ceramic processing
- Housing assembly
- Electrical connector installation
- Final testing and calibration
- Quality Control
- inspection: Visual and electrical testingCertification: ISO/TS 16949Standards: Meets or exceeds OEM specifications
- Sustainability Practices
- Materials: Use of environmentally friendly materialsEnergy Efficiency: Energy-efficient manufacturing processesWaste Reduction: Recycling programs
- Production Metrics
- Annual Production: Over 10 million unitsFailure Rate: Less than 1%Delivery Accuracy: 99.9% on-time delivery
Service Information for emissions_sensors Service
Maintenance and service requirements specific to this component
- Inspect sensor electrical connectors
- Check wiring harness for damage
- Scan for fault codes
- Clean sensor connectors
- Verify sensor operation
Essential for maintaining accurate emissions control and engine performance
- Inspect sensor elements
- Check for exhaust leaks
- Test sensor response time
- Verify catalytic converter efficiency
- Update sensor calibration if necessary
Recommended before long trips or extreme driving conditions
- Replace oxygen sensors if necessary
- Inspect and clean sensor housings
- Check sensor mounting brackets
- Test sensor heaters
- Perform thorough emissions system test
Critical for maintaining emissions compliance and engine efficiency
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the function of the NOx sensor in the 2016-Present Audi S4 emissions system?
What is the function of the NOx sensor in the 2016-Present Audi S4 emissions system?
The NOx (Nitrogen Oxide) sensor monitors the levels of nitrogen oxides in the exhaust gases. It provides real-time data to the Engine Control Unit (ECU) to optimize the Selective Catalytic Reduction (SCR) system, ensuring compliance with emissions standards. The sensor operates at a temperature range of 200°C to 900°C and has a response time of less than 1 second.
Q2 How often should the oxygen (O2) sensors be replaced in the Audi S4?
How often should the oxygen (O2) sensors be replaced in the Audi S4?
Oxygen sensors in the Audi S4 typically have a lifespan of 60,000 to 90,000 miles. However, this can vary based on driving conditions and fuel quality. Symptoms of a failing O2 sensor include poor fuel economy, rough idling, and increased emissions. Always refer to the vehicle's service manual for specific replacement intervals.
Q3 What is the voltage range for the lambda sensors in the Audi S4?
What is the voltage range for the lambda sensors in the Audi S4?
The lambda sensors (also known as O2 sensors) in the Audi S4 operate within a voltage range of 0.1V to 0.9V. A reading below 0.45V indicates a lean mixture, while a reading above 0.45V indicates a rich mixture. The ECU uses this data to adjust the air-fuel ratio for optimal combustion and emissions control.
Q4 Can a faulty emissions sensor trigger a check engine light in the Audi S4?
Can a faulty emissions sensor trigger a check engine light in the Audi S4?
Yes, a faulty emissions sensor, such as the NOx sensor, O2 sensor, or particulate matter sensor, can trigger the check engine light (MIL). Diagnostic trouble codes (DTCs) such as P0135 (O2 Sensor Heater Circuit Malfunction) or P2201 (NOx Sensor Circuit Range/Performance) may be stored in the ECU. Professional diagnostic tools are required to accurately identify the issue.
Q5 What is the role of the particulate matter sensor in the Audi S4?
What is the role of the particulate matter sensor in the Audi S4?
The particulate matter (PM) sensor measures the concentration of soot particles in the exhaust gas. It works in conjunction with the Diesel Particulate Filter (DPF) to ensure efficient regeneration and compliance with emissions regulations. The sensor has a detection range of 0 to 10 mg/m³ and operates at temperatures up to 800°C.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Audi S4 Emissions System Overview
Coming SoonDetailed guide on the emissions control system, including sensor locations, functions, and diagnostic procedures.
NOx Sensor Replacement Procedure
Coming SoonStep-by-step instructions for replacing the NOx sensor in the 2016-Present Audi S4, including torque specifications and safety precautions.
O2 Sensor Diagnostic Codes and Troubleshooting
Coming SoonComprehensive list of diagnostic trouble codes (DTCs) related to O2 sensors and troubleshooting tips for the Audi S4.
Audi S4 Emissions Warranty Information
Coming SoonOfficial warranty details for emissions-related components, including coverage periods and exclusions.
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.