BMW M4 2014-2020 Emissions & Sensors Specifications
Comprehensive guide to the emissions sensors system in the 2014-2020 BMW M4, including technical details, diagnostic information, and maintenance tips for optimal performance and compliance.
Overview Specifications
Comprehensive description of the emissions_sensors specifications for the 2014-2020 BMW M4, 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 Voltage Range
0.1V to 0.9V
NOx Sensor Measurement Range
0 ppm to 1000 ppm
EGT Sensor Operating Range
-40°C to 1000°C
Exhaust Backpressure Range
0 kPa to 250 kPa
Intake Manifold Pressure Range
0 kPa to 300 kPa
Available Specifications
Oxygen (O2) Sensors
Details about the oxygen sensors used in the 2014-2020 BMW M4, including their role in monitoring exhaust gases and ensuring optimal fuel-air mixture.
Oxygen (O2) Sensors
Details about the oxygen sensors used in the 2014-2020 BMW M4, including their role in monitoring exhaust gases and ensuring optimal fuel-air mixture.
Front O2 Sensor Specifications
- Location: Pre-catalytic converter
- Operating temperature range: -40°C to 900°C
- Output voltage range: 0.1V to 0.9V
- Response time: <100ms
- Material: Zirconia ceramic element
Rear O2 Sensor Specifications
- Location: Post-catalytic converter
- Operating temperature range: -40°C to 800°C
- Output voltage range: 0.1V to 0.9V
- Response time: <150ms
- Material: Zirconia ceramic element
Note: Rear O2 sensors are primarily used for monitoring catalytic converter efficiency.
Nitrogen Oxide (NOx) Sensors
Technical details about the NOx sensors in the 2014-2020 BMW M4, which measure nitrogen oxide levels to comply with emissions regulations.
Nitrogen Oxide (NOx) Sensors
Technical details about the NOx sensors in the 2014-2020 BMW M4, which measure nitrogen oxide levels to comply with emissions regulations.
NOx Sensor Specifications
- Location: Integrated into the exhaust system
- Operating temperature range: -40°C to 950°C
- Measurement range: 0 ppm to 1000 ppm
- Accuracy: ±5 ppm
- Material: Alumina ceramic housing
NOx Sensor Diagnostics
- Self-diagnostic capability: Yes
- Fault detection: Over-temperature, under-temperature, and signal drift
- Communication protocol: CAN bus
- Replacement interval: 100,000 miles or as needed
Note: NOx sensors are critical for meeting Euro 6 emissions standards.
Temperature Sensors
Information about the temperature sensors used in the emissions system of the 2014-2020 BMW M4, including their role in monitoring exhaust gas temperatures.
Temperature Sensors
Information about the temperature sensors used in the emissions system of the 2014-2020 BMW M4, including their role in monitoring exhaust gas temperatures.
Exhaust Gas Temperature (EGT) Sensor Specifications
- Location: Integrated into the exhaust manifold
- Operating temperature range: -40°C to 1000°C
- Output signal: 0V to 5V analog
- Accuracy: ±2°C
- Material: Stainless steel housing with platinum sensing element
Catalytic Converter Temperature Sensor
- Location: Mounted on the catalytic converter
- Operating temperature range: -40°C to 900°C
- Output signal: 0V to 5V analog
- Accuracy: ±3°C
- Material: Stainless steel housing with nickel alloy sensing element
Note: Ensures catalytic converter operates within optimal temperature range.
Pressure Sensors
Details about the pressure sensors in the emissions system of the 2014-2020 BMW M4, which monitor exhaust backpressure and intake manifold pressure.
Pressure Sensors
Details about the pressure sensors in the emissions system of the 2014-2020 BMW M4, which monitor exhaust backpressure and intake manifold pressure.
Exhaust Backpressure Sensor Specifications
- Location: Integrated into the exhaust system
- Pressure range: 0 kPa to 250 kPa
- Output signal: 0.5V to 4.5V analog
- Accuracy: ±1 kPa
- Material: Stainless steel diaphragm
Intake Manifold Pressure Sensor
- Location: Mounted on the intake manifold
- Pressure range: 0 kPa to 300 kPa
- Output signal: 0.5V to 4.5V analog
- Accuracy: ±1 kPa
- Material: Aluminum housing with silicone diaphragm
Note: Critical for optimizing turbocharger performance and emissions control.
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Component Specifications
Oxygen Sensors
- Type
- Wideband Zirconia
- Location
-
- Upstream (pre-catalytic converter)
- Downstream (post-catalytic converter)
- Part Number
-
- 11787586953
- 11787586954
- Operating Temperature Range
- -40°C to 900°C
- Response Time
- < 100 ms
- Voltage Output Range
- 0.1V to 4.9V
- Tolerance
- ±2% of reading
Nitrogen Oxide Sensors
- Type
- NOx Sensor
- Location
-
- Downstream of SCR catalyst
- Part Number
- 11748659622
- Operating Temperature Range
- -40°C to 500°C
- Measurement Range
- 0 ppm to 1000 ppm
- Accuracy
- ±5 ppm
- Response Time
- < 200 ms
Particulate Matter Sensors
- Type
- PM Sensor
- Location
-
- Downstream of DPF
- Part Number
- 11748659623
- Operating Temperature Range
- -40°C to 300°C
- Measurement Range
- 0 mg/m³ to 100 mg/m³
- Accuracy
- ±1 mg/m³
- Response Time
- < 500 ms
Exhaust Gas Temperature Sensors
- Type
- K-Type Thermocouple
- Location
-
- Upstream of catalytic converter
- Downstream of catalytic converter
- Part Number
-
- 11748659624
- 11748659625
- Operating Temperature Range
- -40°C to 1000°C
- Accuracy
- ±2°C
- Response Time
- < 50 ms
Catalytic Converter Efficiency Sensors
- Type
- Oxygen Sensor
- Location
-
- Downstream of catalytic converter
- Part Number
- 11787586955
- Operating Temperature Range
- -40°C to 900°C
- Voltage Output Range
- 0.1V to 4.9V
- Tolerance
- ±2% of reading
Ammonia Sensors
- Type
- NH3 Sensor
- Location
-
- Downstream of SCR catalyst
- Part Number
- 11748659626
- Operating Temperature Range
- -40°C to 500°C
- Measurement Range
- 0 ppm to 100 ppm
- Accuracy
- ±2 ppm
- Response Time
- < 300 ms
Sensor Connectors
- Type
- Waterproof Electrical Connector
- Part Number
- 61136912345
- Operating Temperature Range
- -40°C to 150°C
- Voltage Rating
- 12V DC
- Current Rating
- 5A
Sensor Wiring
- Type
- High-Temperature Resistant Wiring
- Part Number
- 61136912346
- Operating Temperature Range
- -40°C to 200°C
- Wire Gauge
- 18 AWG
- insulation Material
- PTFE
Diagnostic Codes
- P0130
- O2 Sensor Circuit Malfunction (Bank 1 Sensor 1)
- P0135
- O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P0141
- O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
- P2201
- NOx Sensor Circuit Range/Performance (Bank 1)
- P2463
- DPF Restriction - Soot Accumulation
Maintenance Specifications
- inspection Interval
- Every 30,000 miles or 24 months
- Replacement interval
- Every 100,000 miles or 10 years
- Cleaning Procedure
- Not recommended, replace if faulty
- Calibration Required
- No, self-calibrating
Service Information Service
Detailed service requirements and schedules for emissions sensors
- Inspect all emissions sensors for damage or contamination
- Check wiring and connectors for corrosion or wear
- Verify sensor readings using diagnostic tool
Replace any faulty sensors immediately
- Replace all oxygen sensors
- Replace NOx sensor if necessary
- Inspect and clean particulate matter sensor
Follow BMW-recommended replacement intervals
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What types of emissions sensors are used in the 2014-2020 BMW M4?
What types of emissions sensors are used in the 2014-2020 BMW M4?
The 2014-2020 BMW M4 is equipped with multiple emissions sensors, including the Oxygen (O2) sensor, Nitrogen Oxide (NOx) sensor, and Differential Pressure Sensor (DPS). These sensors monitor exhaust gases to ensure compliance with emissions standards and optimize engine performance.
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 to 50,000 miles. However, replacement intervals vary based on driving conditions and sensor performance. Fault codes or Check Engine Light (CEL) activation may indicate the need for immediate inspection or replacement.
Q3 What are the symptoms of a failing NOx sensor in the BMW M4?
What are the symptoms of a failing NOx sensor in the BMW M4?
A failing NOx sensor may cause reduced engine performance, increased fuel consumption, and activation of the Check Engine Light. Diagnostic trouble codes (DTCs) such as P229F or P2201 may also be logged, indicating NOx sensor malfunction.
Q4 Can I replace emissions sensors myself, or is professional service required?
Can I replace emissions sensors myself, or is professional service required?
While some emissions sensors can be replaced by experienced DIY enthusiasts, professional service is recommended. Proper calibration and coding using BMW-specific diagnostic tools (e.g., ISTA) are often required to ensure correct functionality and avoid warranty issues.
Q5 What is the operating temperature range for the O2 sensor in the BMW M4?
What is the operating temperature range for the O2 sensor in the BMW M4?
The O2 sensor in the BMW M4 operates within a temperature range of -40°C to 900°C (-40°F to 1652°F). It is designed to withstand extreme conditions while providing accurate readings for optimal fuel-air mixture control.
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 M4 Emissions System Overview
Coming SoonDetailed guide on the emissions control system, including sensor locations, functions, and diagnostic procedures.
O2 Sensor Replacement Procedure
Coming SoonStep-by-step instructions for replacing the O2 sensor, including torque specifications and coding requirements.
NOx Sensor Diagnostics and Troubleshooting
Coming SoonComprehensive troubleshooting guide for NOx sensor issues, including common fault codes and repair solutions.
BMW ISTA Diagnostic Tool User Manual
Coming SoonOfficial manual for using the ISTA diagnostic tool to calibrate and code emissions sensors.
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