BMW 550i 2003-2010 Emissions & Sensors Specifications
Detailed technical specifications and troubleshooting guide for the emissions sensors system in the 2003-2010 BMW 550I. Learn about O2 sensors, NOx sensors, exhaust gas temperature sensors, and diagnostic procedures specific to the N62 V8 engine.
Overview Specifications
Comprehensive description of the emissions_sensors specifications for the 2003-2010 BMW 550I, including key features, measurements, and technical details
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Key Specifications
O2 Sensor Voltage Range
0.1V to 0.9V
NOx Sensor Operating Temp
-40°C to 500°C
EGT Sensor Accuracy
±2°C
Catalyst Temp Range
-40°C to 900°C
O2 Sensor Heater Resistance
6-10 ohms at 20°C
Available Specifications
Oxygen (O2) Sensors
Detailed information on the oxygen sensors used in the 2003-2010 BMW 550I, including their placement, functionality, and technical specifications.
Oxygen (O2) Sensors
Detailed information on the oxygen sensors used in the 2003-2010 BMW 550I, including their placement, functionality, and technical specifications.
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 at 20°C
Rear O2 Sensor Specifications
- Located post-catalytic converter
- Operating temperature range: -40°C to 800°C
- Output voltage range: 0.1V to 0.9V
- Response time: <120ms
- Heater resistance: 6-10 ohms at 20°C
Note: The rear O2 sensor is primarily used for monitoring catalytic converter efficiency.
Nitrogen Oxide (NOx) Sensors
Technical details and specifications for the NOx sensors in the 2003-2010 BMW 550I, including their role in emissions control and performance metrics.
Nitrogen Oxide (NOx) Sensors
Technical details and specifications for the NOx sensors in the 2003-2010 BMW 550I, including their role in emissions control and performance metrics.
NOx Sensor Placement and Function
- Located in the exhaust system, downstream of the SCR catalyst
- Measures NOx concentration in exhaust gases
- Operating temperature range: -40°C to 500°C
- Output signal: 0-5V analog
- Response time: <200ms
NOx Sensor Calibration
- Calibration required every 100,000 miles
- Calibration tolerance: ±5%
- Sensor lifespan: ~150,000 miles
- Diagnostic trouble codes (DTCs) for NOx sensor errors: P2200-P2209
Note: Regular calibration ensures accurate NOx readings and optimal emissions control.
Temperature Sensors
Information on the temperature sensors used in the emissions system of the 2003-2010 BMW 550I, including their specifications and roles.
Temperature Sensors
Information on the temperature sensors used in the emissions system of the 2003-2010 BMW 550I, including their specifications and roles.
Exhaust Gas Temperature (EGT) Sensors
- Located in the exhaust manifold and downstream of the catalytic converter
- Operating temperature range: -40°C to 1000°C
- Output signal: 0-5V analog
- Response time: <50ms
- Accuracy: ±2°C
Catalyst Temperature Sensors
- Mounted on the catalytic converter
- Operating temperature range: -40°C to 900°C
- Output signal: 0-5V analog
- Response time: <60ms
- Accuracy: ±3°C
Note: Catalyst temperature sensors are critical for preventing overheating and ensuring optimal catalytic converter performance.
Diagnostics and Maintenance
Guidelines for diagnosing and maintaining emissions sensors in the 2003-2010 BMW 550I, including common issues and troubleshooting steps.
Diagnostics and Maintenance
Guidelines for diagnosing and maintaining emissions sensors in the 2003-2010 BMW 550I, including common issues and troubleshooting steps.
Common Fault Codes
- P0130-P0167: O2 sensor circuit malfunctions
- P2200-P2209: NOx sensor-related faults
- P0420: Catalyst efficiency below threshold
- P2096: Post-catalyst fuel trim system too lean
Maintenance Recommendations
- Inspect sensors every 30,000 miles
- Replace O2 sensors every 100,000 miles
- Clean sensor connectors during routine maintenance
- Use OEM or equivalent replacement parts
Note: Regular maintenance ensures accurate sensor readings and compliance with emissions standards.
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Component Specifications
Oxygen Sensors
- Type
- Zirconia-based O2 sensor
- Location
-
- Pre-catalytic converter
- Post-catalytic converter
- Operating Temperature
- 300°C to 850°C
- Response Time
- Less than 100 ms
- Part Number
-
- 11 78 7 512 387
- 11 78 7 512 388
- Cross References
-
- DME control unit
- Catalytic converter
- Tolerances
- Voltage Output: 0.1V to 0.9VLambda Value: 0.97 to 1.03
Nitrogen Oxide Sensors
- Type
- NOx sensor
- Location
- Downstream of catalytic converter
- Operating Temperature
- 200°C to 900°C
- Response Time
- Less than 500 ms
- Part Number
- 11 78 7 512 389
- Cross References
-
- SCR system
- DDE control unit
- Tolerances
- NOx Concentration: 0 ppm to 1000 ppmAccuracy: ±5%
Mass Air Flow Sensor
- Type
- Hot-film air mass sensor
- Location
- Intake manifold
- Operating Temperature
- -40°C to 120°C
- Output Signal
- 0V to 5V
- Part Number
- 13 62 7 512 390
- Cross References
-
- DME control unit
- Throttle valve
- Tolerances
- Air Flow Range: 0 kg/h to 1000 kg/hAccuracy: ±2%
Exhaust Gas Temperature Sensors
- Type
- NTC thermistor
- Location
-
- Pre-catalytic converter
- Post-catalytic converter
- Operating Temperature
- -40°C to 1000°C
- Response Time
- Less than 10 seconds
- Part Number
-
- 11 78 7 512 391
- 11 78 7 512 392
- Cross References
-
- DME control unit
- Catalytic converter
- Tolerances
- Temperature Accuracy: ±5°C
Catalytic Converter Efficiency Sensor
- Type
- O2 sensor-based efficiency monitor
- Location
- Post-catalytic converter
- Operating Temperature
- 300°C to 850°C
- Response Time
- Less than 100 ms
- Part Number
- 11 78 7 512 393
- Cross References
-
- DME control unit
- Oxygen sensors
- Tolerances
- Efficiency Threshold: 95% conversion efficiency
Evaporative Emissions Sensor
- Type
- Pressure sensor
- Location
- Fuel tank
- Operating Temperature
- -40°C to 85°C
- Pressure Range
- -15 kPa to +15 kPa
- Part Number
- 16 14 7 512 394
- Cross References
-
- DME control unit
- Fuel tank vent valve
- Tolerances
- Pressure Accuracy: ±0.5 kPa
Differential Pressure Sensor
- Type
- Piezoresistive sensor
- Location
- Diesel particulate filter
- Operating Temperature
- -40°C to 150°C
- Pressure Range
- 0 kPa to 10 kPa
- Part Number
- 11 78 7 512 395
- Cross References
-
- DDE control unit
- DPF system
- Tolerances
- Pressure Accuracy: ±0.2 kPa
Ambient Air Temperature Sensor
- Type
- NTC thermistor
- Location
- Front bumper
- Operating Temperature
- -40°C to 85°C
- Response Time
- Less than 5 seconds
- Part Number
- 65 81 7 512 396
- Cross References
-
- DME control unit
- Climate control system
- Tolerances
- Temperature Accuracy: ±2°C
Engine Coolant Temperature Sensor
- Type
- NTC thermistor
- Location
- Engine coolant outlet
- Operating Temperature
- -40°C to 130°C
- Response Time
- Less than 10 seconds
- Part Number
- 11 62 7 512 397
- Cross References
-
- DME control unit
- Cooling system
- Tolerances
- Temperature Accuracy: ±3°C
Diagnostic Specifications
- Fault Codes
-
- P0130
- P0135
- P0420
- P0430
- P2201
- Diagnostic Tools
-
- BMW ISTA
- OBD-II scanner
- Test Conditions
- Engine Running: YesOperating Temperature: Above 70°CIdle Speed: 600 rpm to 800 rpm
- Tolerances
- Voltage Range: 0.1V to 0.9VLambda Range: 0.97 to 1.03
Service Information Service
Detailed service requirements and schedules for emissions sensors
- Inspect oxygen sensors for contamination
- Check NOx sensor functionality
- Verify catalytic converter efficiency
Replace sensors if fault codes persist after cleaning
- Replace oxygen sensors
- Inspect exhaust gas temperature sensors
- Check differential pressure sensor calibration
Use OEM parts for replacement to ensure compatibility
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the function of the oxygen sensor in the 2003-2010 BMW 550i emissions system?
What is the function of the oxygen sensor in the 2003-2010 BMW 550i emissions system?
The oxygen sensor (O2 sensor) monitors the oxygen content in the exhaust gases. It provides real-time feedback to the engine control unit (ECU) to adjust the air-fuel mixture for optimal combustion, ensuring compliance with emissions standards. The sensor operates at a voltage range of 0.1V (lean mixture) to 0.9V (rich mixture).
Q2 How often should the emissions sensors be replaced on a 2003-2010 BMW 550i?
How often should the emissions sensors be replaced on a 2003-2010 BMW 550i?
BMW recommends inspecting the emissions sensors every 60,000 miles. Replacement intervals vary based on driving conditions, but typically, oxygen sensors should be replaced every 90,000-120,000 miles. Faulty sensors may trigger the Check Engine Light (CEL) and require immediate attention.
Q3 What are the symptoms of a failing emissions sensor in a 2003-2010 BMW 550i?
What are the symptoms of a failing emissions sensor in a 2003-2010 BMW 550i?
Common symptoms include increased fuel consumption, rough idling, poor acceleration, a persistent Check Engine Light (CEL), and failed emissions tests. Diagnostic trouble codes (DTCs) such as P0130 (O2 Sensor Circuit Malfunction) or P0420 (Catalyst System Efficiency Below Threshold) may also indicate sensor issues.
Q4 Can I replace the emissions sensors myself on a 2003-2010 BMW 550i?
Can I replace the emissions sensors myself on a 2003-2010 BMW 550i?
While it is possible to replace emissions sensors yourself, it requires specialized tools and knowledge of the vehicle's exhaust system. Proper torque specifications (typically 30-50 Nm) must be followed to avoid damage. Improper installation can lead to exhaust leaks or sensor failure. Professional service is recommended.
Q5 What is the difference between upstream and downstream oxygen sensors in the 2003-2010 BMW 550i?
What is the difference between upstream and downstream oxygen sensors in the 2003-2010 BMW 550i?
Upstream sensors (pre-catalytic converter) monitor the air-fuel ratio for engine performance, while downstream sensors (post-catalytic converter) measure the efficiency of the catalytic converter. Both sensors are critical for emissions control and engine management.
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 Technical Guide
Coming SoonA detailed guide covering the emissions system components, including sensors, catalytic converters, and ECU integration for the 2003-2010 BMW 550i.
Oxygen Sensor Replacement Procedure
Coming SoonStep-by-step instructions for safely replacing oxygen sensors on the 2003-2010 BMW 550i, including torque specifications and safety precautions.
Diagnosing Emissions Sensor Faults
Coming SoonLearn how to diagnose and troubleshoot common emissions sensor issues using diagnostic trouble codes (DTCs) and specialized tools.
BMW Genuine Parts Catalog
Coming SoonAccess the official BMW parts catalog to ensure you are using genuine emissions sensors and components for your 2003-2010 BMW 550i.
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