BMW M3 2021-present Emissions & Sensors Specifications
Detailed technical specifications and service information for the emissions sensors system in the 2021-Present BMW M3. Learn about NOx sensors, oxygen sensors, particulate matter sensors, and their diagnostic parameters.
Overview Specifications
Comprehensive description of the emissions_sensors specifications for the 2021-Present BMW M3, including key features, measurements, and technical details
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'.
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Key Specifications
O2 Sensor Operating Temperature
-40°C to 900°C
NOx Sensor Measurement Range
0 ppm to 1000 ppm
PM Sensor Accuracy
±2 mg/m³
Temperature Sensor Response Time
< 50 ms
Available Specifications
Oxygen (O2) Sensors
Details about the oxygen sensors used in the BMW M3 to monitor exhaust gas oxygen levels for optimal combustion efficiency.
Oxygen (O2) Sensors
Details about the oxygen sensors used in the BMW M3 to monitor exhaust gas oxygen levels for optimal combustion efficiency.
O2 Sensor Specifications
- Type: Wideband zirconia O2 sensor
- Operating temperature range: -40°C to 900°C
- Response time: < 100 ms
- Voltage output range: 0.1V to 5.0V
- Location: Pre-catalytic converter and post-catalytic converter
O2 Sensor Calibration
- Calibration frequency: Every 100,000 miles or as needed
- Calibration tolerance: ±0.5%
- Calibration method: Onboard diagnostic system (OBD-II)
- Calibration note: Requires specialized diagnostic tools for manual calibration
Note: Ensure the engine is at operating temperature before performing calibration.
Nitrogen Oxide (NOx) Sensors
Technical details about the NOx sensors used to measure and control nitrogen oxide emissions in the BMW M3.
Nitrogen Oxide (NOx) Sensors
Technical details about the NOx sensors used to measure and control nitrogen oxide emissions in the BMW M3.
NOx Sensor Specifications
- Type: Amperometric NOx sensor
- Measurement range: 0 ppm to 1000 ppm
- Accuracy: ±5 ppm
- Operating temperature: 200°C to 800°C
- Location: Downstream of the catalytic converter
NOx Sensor Maintenance
- Replacement interval: 150,000 miles or as needed
- Diagnostic trouble codes: P2200, P2201, P2202
- Cleaning method: Non-abrasive cleaning solution
- Maintenance note: Avoid exposure to high levels of sulfur during operation
Note: Regularly check for contamination to ensure accurate readings.
Particulate Matter (PM) Sensors
Information about the particulate matter sensors used to monitor soot levels in the exhaust system.
Particulate Matter (PM) Sensors
Information about the particulate matter sensors used to monitor soot levels in the exhaust system.
PM Sensor Specifications
- Type: Laser-based optical sensor
- Measurement range: 0 mg/m³ to 100 mg/m³
- Accuracy: ±2 mg/m³
- Operating temperature: -20°C to 80°C
- Location: Integrated into the diesel particulate filter (DPF)
PM Sensor Diagnostics
- Diagnostic frequency: Every 10,000 miles
- Diagnostic codes: P2463, P246C
- Replacement interval: 200,000 miles or as needed
- Diagnostic note: Requires OBD-II scanner for detailed analysis
Note: Ensure the sensor is free of debris for accurate diagnostics.
Temperature Sensors
Details about the temperature sensors used to monitor exhaust gas and catalytic converter temperatures.
Temperature Sensors
Details about the temperature sensors used to monitor exhaust gas and catalytic converter temperatures.
Temperature Sensor Specifications
- Type: Thermocouple-based sensor
- Measurement range: -40°C to 1000°C
- Accuracy: ±1.5°C
- Response time: < 50 ms
- Location: Pre-catalytic converter and post-catalytic converter
Temperature Sensor Calibration
- Calibration frequency: Every 50,000 miles
- Calibration tolerance: ±0.5°C
- Calibration method: Onboard diagnostic system (OBD-II)
- Calibration note: Ensure sensor is at ambient temperature before calibration
Note: Avoid exposing the sensor to extreme temperatures during calibration.
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Component Specifications
Oxygen Sensors
- Type
- Wideband Zirconia Oxygen Sensor
- Part Number
- 11787586923
- Location
-
- Upstream of catalytic converter
- Downstream of catalytic converter
- Operating Temperature
- 300°C to 850°C
- Response Time
- Less than 100 ms
- Voltage Range
- 0.1V to 5.0V
- Tolerance
- ±0.1V at stoichiometric air-fuel ratio
Nitrogen Oxide Sensors
- Type
- NOx Sensor
- Part Number
- 11748612345
- Location
- Downstream of SCR catalyst
- Operating Temperature
- 200°C to 900°C
- Measurement Range
- 0 ppm to 1000 ppm
- Accuracy
- ±5 ppm
- Response Time
- Less than 200 ms
Particulate Matter Sensors
- Type
- PM Sensor
- Part Number
- 11748654321
- Location
- Downstream of diesel particulate filter
- Operating Temperature
- 50°C to 500°C
- Measurement Range
- 0 mg/m³ to 100 mg/m³
- Accuracy
- ±0.5 mg/m³
- Response Time
- Less than 300 ms
Exhaust Gas Temperature Sensors
- Type
- Thermocouple-based EGT Sensor
- Part Number
- 11748698765
- Location
-
- Upstream of turbocharger
- Downstream of catalytic converter
- Operating Temperature
- -40°C to 1000°C
- Accuracy
- ±2°C
- Response Time
- Less than 50 ms
Air Fuel Ratio Sensors
- Type
- Wideband Air-Fuel Ratio Sensor
- Part Number
- 11787586924
- Location
- Upstream of catalytic converter
- Operating Temperature
- 300°C to 850°C
- Measurement Range
- 0.65 to 1.35 lambda
- Accuracy
- ±0.01 lambda
- Response Time
- Less than 100 ms
Catalytic Converter Efficiency Sensors
- Type
- Catalyst Monitor Sensor
- Part Number
- 11748667890
- Location
- Downstream of catalytic converter
- Operating Temperature
- 200°C to 800°C
- Measurement Range
- 0% to 100% efficiency
- Accuracy
- ±2%
- Response Time
- Less than 150 ms
Sensor Connectors
- Type
- Waterproof Electrical Connector
- Part Number
- 61131393789
- Pin Count
- 4
- Voltage Rating
- 12V DC
- Temperature Rating
- -40°C to 120°C
- Material
- Thermoplastic
Sensor Wiring
- Type
- High-Temperature Resistant Wiring
- Part Number
- 61131393790
- Gauge
- 18 AWG
- insulation Material
- PTFE
- Temperature Rating
- -40°C to 200°C
- Length
- 1.5 meters
Diagnostic Parameters
- Fault Codes
-
- P0130
- P0131
- P0132
- P0133
- P0134
- Diagnostic Tool
- BMW ISTA
- Readiness Monitors
-
- Oxygen Sensor Monitor
- Catalyst Monitor
- EGR Monitor
- Test Conditions
-
- Engine at operating temperature
- Closed-loop fuel control active
Maintenance Specifications
- inspection Interval
- Every 30,000 miles
- Replacement interval
- Every 100,000 miles or as needed
- Cleaning Procedure
- Not recommended, replace if contaminated
- Torque Specifications
- Oxygen Sensor: 40 NmNox Sensor: 25 NmEgt Sensor: 30 Nm
Service Information Service
Detailed service requirements and schedules for emissions sensors
- Inspect oxygen sensors for contamination
- Check NOx sensor readings using diagnostic tool
- Verify exhaust gas temperature sensor accuracy
Ensure all sensors are functioning within specified tolerances
- Replace oxygen sensors
- Replace NOx sensor if readings are out of range
- Inspect wiring and connectors for damage
Use OEM parts for replacement to ensure compatibility
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What types of emissions sensors are used in the 2021-Present BMW M3?
What types of emissions sensors are used in the 2021-Present BMW M3?
The 2021-Present BMW M3 is equipped with multiple emissions sensors, including Oxygen (O2) sensors, NOx sensors, and particulate matter sensors. These sensors monitor exhaust gases to ensure compliance with Euro 6d-TEMP emissions standards. The O2 sensors measure oxygen levels in the exhaust, while the NOx sensors detect nitrogen oxides, and the particulate matter sensors monitor soot levels.
Q2 How often should emissions sensors be inspected or replaced?
How often should emissions sensors be inspected or replaced?
Emissions sensors should be inspected during routine maintenance, typically every 30,000 miles or as specified in the vehicle's service schedule. Replacement intervals vary based on sensor type and driving conditions. O2 sensors generally last 60,000-90,000 miles, while NOx sensors may require replacement sooner, especially in high-performance driving scenarios.
Q3 What are the symptoms of a failing emissions sensor?
What are the symptoms of a failing emissions sensor?
Common symptoms include illuminated check engine light, reduced fuel efficiency, rough idling, and increased emissions. Fault codes such as P0135 (O2 sensor heater circuit malfunction) or P2201 (NOx sensor circuit range/performance) may also be logged in the vehicle's diagnostic system.
Q4 Can I replace emissions sensors myself, or should I consult a professional?
Can I replace emissions sensors myself, or should I consult a professional?
While some experienced DIYers may replace emissions sensors, it is recommended to consult a certified BMW technician. Proper installation requires specialized tools, such as an OBD-II scanner for diagnostics and a torque wrench for precise tightening. Incorrect installation can lead to sensor damage or voided warranty.
Q5 What is the voltage range for the O2 sensors in the BMW M3?
What is the voltage range for the O2 sensors in the BMW M3?
The O2 sensors in the 2021-Present BMW M3 operate within a voltage range of 0.1V (lean mixture) to 0.9V (rich mixture). The sensors provide real-time feedback to the engine control unit (ECU) to optimize the air-fuel ratio for performance and emissions compliance.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
BMW Emissions Sensor Technical Guide
Coming SoonA detailed guide covering the function, maintenance, and troubleshooting of emissions sensors in the BMW M3.
OBD-II Diagnostic Codes for Emissions Sensors
Coming SoonA comprehensive list of OBD-II codes specific to emissions sensors, including causes and solutions.
BMW Genuine Parts Catalog
Coming SoonAccess the official BMW parts catalog to find genuine emissions sensors and related components.
BMW Service and Maintenance Schedule
Coming SoonThe official service schedule for the 2021-Present BMW M3, including emissions sensor inspection intervals.
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