BMW 640i 2011-2018 Emissions & Sensors Specifications
Comprehensive guide to the emissions sensors system in the 2011-2018 BMW 640I, including technical details, diagnostic codes, and maintenance procedures for O2 sensors, NOx sensors, and particulate matter sensors.
Overview Specifications
Comprehensive description of the emissions_sensors specifications for the 2011-2018 BMW 640I, including key features, measurements, and technical details
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Use the search function to locate 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
0-2000 ppm
EGT Sensor Operating Range
-40°C to 1000°C
MAF Sensor Measurement Range
0-500 kg/h
Catalyst Temperature Sensor Accuracy
±3°C
Available Specifications
Oxygen (O2) Sensors
Details about the oxygen sensors used in the 2011-2018 BMW 640I, including their role in monitoring exhaust gases and ensuring optimal fuel efficiency.
Oxygen (O2) Sensors
Details about the oxygen sensors used in the 2011-2018 BMW 640I, including their role in monitoring exhaust gases and ensuring optimal fuel efficiency.
Front O2 Sensor Specifications
- Located in the exhaust manifold, pre-catalytic converter
- Operating temperature range: -40°C to 900°C
- Output voltage range: 0.1V to 0.9V
- Response time: <100ms
- Heater resistance: 6-10 ohms
Rear O2 Sensor Specifications
- Located post-catalytic converter
- Operating temperature range: -40°C to 850°C
- Output voltage range: 0.1V to 0.9V
- Response time: <120ms
- Heater resistance: 6-10 ohms
Note: Rear O2 sensors are primarily used to monitor catalytic converter efficiency.
Nitrogen Oxide (NOx) Sensors
Technical details about the NOx sensors in the 2011-2018 BMW 640I, which measure nitrogen oxide levels to comply with emissions regulations.
Nitrogen Oxide (NOx) Sensors
Technical details about the NOx sensors in the 2011-2018 BMW 640I, which measure nitrogen oxide levels to comply with emissions regulations.
NOx Sensor Specifications
- Located in the exhaust system, post-catalytic converter
- Operating temperature range: -40°C to 950°C
- Measurement range: 0-2000 ppm
- Accuracy: ±5% of reading
- Heater power consumption: 12W
NOx Sensor Diagnostics
- Integrated self-diagnostic capabilities
- Fault detection for sensor degradation
- Communication via 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 2011-2018 BMW 640I, including their role in monitoring exhaust gas temperatures.
Temperature Sensors
Information about the temperature sensors used in the emissions system of the 2011-2018 BMW 640I, including their role in monitoring exhaust gas temperatures.
Exhaust Gas Temperature (EGT) Sensor Specifications
- Located in the exhaust manifold and catalytic converter
- Operating temperature range: -40°C to 1000°C
- Output signal: 0-5V analog
- Accuracy: ±2°C
- Response time: <200ms
Catalyst Temperature Sensor Specifications
- Located within the catalytic converter
- Operating temperature range: -40°C to 950°C
- Output signal: 0-5V analog
- Accuracy: ±3°C
- Response time: <250ms
Note: Catalyst temperature sensors help prevent overheating and damage to the catalytic converter.
Mass Air Flow (MAF) Sensor
Details about the MAF sensor in the 2011-2018 BMW 640I, which measures the volume and density of air entering the engine for optimal combustion.
Mass Air Flow (MAF) Sensor
Details about the MAF sensor in the 2011-2018 BMW 640I, which measures the volume and density of air entering the engine for optimal combustion.
MAF Sensor Specifications
- Located in the intake air duct
- Operating temperature range: -40°C to 120°C
- Measurement range: 0-500 kg/h
- Output signal: 0-5V analog
- Accuracy: ±2% of reading
MAF Sensor Diagnostics
- Integrated self-diagnostic capabilities
- Fault detection for contamination or damage
- Communication via CAN bus
- Replacement interval: 75,000 miles or as needed
Note: A faulty MAF sensor can lead to poor fuel economy and increased emissions.
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Component Specifications
Oxygen Sensors
- Part Number
- 11787558025
- Location
-
- Upstream (pre-catalytic converter)
- Downstream (post-catalytic converter)
- Operating Temperature Range
- -40°C to 900°C
- Response Time
- 0.1 to 0.3 seconds
- Voltage Output Range
- 0.1V to 0.9V
- Tolerance
- ±0.02V
- Cross Reference
-
- Catalytic converter
- Engine Control Unit (ECU)
Nitrogen Oxide Sensors
- Part Number
- 11747838574
- Location
- Exhaust system, post-catalytic converter
- Operating Temperature Range
- -40°C to 850°C
- Measurement Range
- 0 to 1000 ppm
- Accuracy
- ±5 ppm
- Response Time
- 1 to 2 seconds
- Cross Reference
-
- Selective Catalytic Reduction (SCR) system
- AdBlue injector
Mass Air Flow Sensor
- Part Number
- 13627563147
- Location
- Intake air duct
- Measurement Range
- 0 to 500 kg/h
- Accuracy
- ±2%
- Operating Temperature Range
- -40°C to 120°C
- Output Signal
- 0 to 5V
- Cross Reference
-
- Air filter
- Throttle body
Exhaust Gas Temperature Sensor
- Part Number
- 11747838573
- Location
-
- Pre-catalytic converter
- Post-catalytic converter
- Operating Temperature Range
- -40°C to 1000°C
- Accuracy
- ±5°C
- Response Time
- 0.5 to 1 second
- Cross Reference
-
- Catalytic converter
- Oxygen sensors
Catalytic Converter Efficiency Sensor
- Part Number
- 11787558026
- Location
- Integrated into catalytic converter
- Operating Temperature Range
- -40°C to 800°C
- Measurement Range
- 0 to 100% efficiency
- Accuracy
- ±2%
- Cross Reference
-
- Oxygen sensors
- Exhaust gas temperature sensor
Evaporative Emissions Sensor
- Part Number
- 13907541763
- Location
- Fuel tank
- Measurement Range
- 0 to 100% vapor concentration
- Accuracy
- ±1%
- Operating Temperature Range
- -40°C to 85°C
- Response Time
- 0.5 to 1 second
- Cross Reference
-
- Fuel tank pressure sensor
- Charcoal canister
Differential Pressure Sensor
- Part Number
- 11747838575
- Location
- Exhaust gas recirculation (EGR) system
- Measurement Range
- 0 to 500 mbar
- Accuracy
- ±1 mbar
- Operating Temperature Range
- -40°C to 150°C
- Response Time
- 0.1 to 0.3 seconds
- Cross Reference
-
- EGR valve
- Intake manifold
Particulate Matter Sensor
- Part Number
- 11747838576
- Location
- Exhaust system, post-diesel particulate filter (DPF)
- Measurement Range
- 0 to 1000 µg/m³
- Accuracy
- ±10 µg/m³
- Operating Temperature Range
- -40°C to 800°C
- Response Time
- 1 to 2 seconds
- Cross Reference
-
- DPF
- Exhaust gas temperature sensor
Fuel Pressure Sensor
- Part Number
- 13537585264
- Location
- Fuel rail
- Measurement Range
- 0 to 150 bar
- Accuracy
- ±0.5 bar
- Operating Temperature Range
- -40°C to 120°C
- Response Time
- 0.1 to 0.3 seconds
- Cross Reference
-
- Fuel injectors
- High-pressure fuel pump
Ambient Air Pressure Sensor
- Part Number
- 13627563148
- Location
- Engine air intake
- Measurement Range
- 500 to 1100 mbar
- Accuracy
- ±1 mbar
- Operating Temperature Range
- -40°C to 85°C
- Response Time
- 0.1 to 0.3 seconds
- Cross Reference
-
- Mass air flow sensor
- Throttle body
Service Information Service
Detailed service requirements and schedules for emissions sensors
- Inspect oxygen sensors for contamination
- Check nitrogen oxide sensor calibration
- Verify exhaust gas temperature sensor readings
Replace sensors if readings are outside specified tolerances
- Replace oxygen sensors
- Inspect catalytic converter efficiency sensor
- Check evaporative emissions sensor for leaks
Use BMW-approved diagnostic tools for calibration
- Replace nitrogen oxide sensor
- Inspect particulate matter sensor
- Verify differential pressure sensor accuracy
Ensure all sensors are functioning within manufacturer specifications
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the function of the oxygen sensor in the 2011-2018 BMW 640i?
What is the function of the oxygen sensor in the 2011-2018 BMW 640i?
The oxygen sensor, also known as the O2 sensor, monitors the oxygen levels in the exhaust gases. It provides real-time data to the Engine Control Unit (ECU) to optimize the air-fuel mixture for efficient combustion, ensuring compliance with emissions standards. The sensor operates within a voltage range of 0.1V (lean mixture) to 0.9V (rich mixture).
Q2 How often should the emissions sensors be replaced in a BMW 640i?
How often should the emissions sensors be replaced in a BMW 640i?
BMW recommends inspecting the emissions sensors every 60,000 miles. However, replacement intervals vary based on driving conditions and sensor performance. A faulty sensor typically triggers a Check Engine Light (CEL) and diagnostic trouble codes (DTCs) such as P0130 or P0150, indicating the need for immediate replacement.
Q3 What are the symptoms of a failing NOx sensor in the BMW 640i?
What are the symptoms of a failing NOx sensor in the BMW 640i?
A failing NOx sensor may cause reduced engine performance, increased fuel consumption, and emission-related fault codes (e.g., P2200 or P2201). The NOx sensor measures nitrogen oxide levels in the exhaust to ensure compliance with emissions regulations. It operates at temperatures up to 900°C and requires precise calibration.
Q4 Can I use aftermarket emissions sensors in my BMW 640i?
Can I use aftermarket emissions sensors in my BMW 640i?
BMW strongly recommends using genuine OEM emissions sensors to ensure compatibility and performance. Aftermarket sensors may not meet the required specifications, leading to inaccurate readings, increased emissions, and potential damage to the catalytic converter or engine. Using non-genuine parts may also void the vehicle's warranty.
Q5 What is the role of the differential pressure sensor in the emissions system?
What is the role of the differential pressure sensor in the emissions system?
The differential pressure sensor monitors the pressure difference across the diesel particulate filter (DPF) in diesel models. In the 2011-2018 BMW 640i, it ensures the DPF is functioning correctly by detecting blockages or excessive soot buildup. The sensor operates within a range of 0-500 mbar and is critical for maintaining 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 System Overview
Coming SoonA detailed guide explaining the emissions control system in the 2011-2018 BMW 640i, including sensor functions and diagnostic procedures.
Oxygen Sensor Replacement Guide
Coming SoonStep-by-step instructions for replacing the oxygen sensor in the BMW 640i, including torque specifications and safety precautions.
NOx Sensor Diagnostics and Troubleshooting
Coming SoonA technical resource for diagnosing and troubleshooting NOx sensor issues, including common fault codes and repair procedures.
BMW Genuine Parts Catalog
Coming SoonAccess the official BMW parts catalog to find genuine emissions sensors and related components for the 2011-2018 640i.
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