BMW 750i 2001-2008 Emissions & Sensors Specifications
Find detailed emissions sensor specifications for the 2001-2008 BMW 750i. Includes sensor types, part numbers, and installation guidelines for optimal performance and emissions compliance.
Emissions Sensors Specifications Overview Specifications
This document provides a comprehensive overview of the emissions sensors specifications for the 2001-2008 BMW 750i. It includes detailed technical information, installation guidelines, and maintenance tips. Use this guide to understand the functionality, troubleshooting, and replacement procedures for emissions-related sensors. Refer to the sections below for specific details and use the quick reference section for key specifications.
How to Use
To find specific information, use the search functionality by typing keywords such as 'oxygen sensor', 'temperature sensor', or 'airflow sensor'. Results will highlight relevant sections.
Navigate through the document by selecting sections from the table of contents. Each section contains subsections with detailed technical points. Use the quick reference section for fast access to key specifications.
Key Specifications
Oxygen Sensor Voltage Range
0.1V to 0.9V
Heated Oxygen Sensor Activation
10-30 seconds
Mass Airflow Sensor Range
0-1000 kg/h
Engine Coolant Temperature Range
-40°C to 120°C
Intake Air Temperature Range
-40°C to 120°C
Available Specifications
Emissions Sensors Overview
This section provides an introduction to the emissions sensors used in the 2001-2008 BMW 750i, including their types, locations, and functions. Understand the role of each sensor in maintaining emissions control and engine performance.
Emissions Sensors Overview
This section provides an introduction to the emissions sensors used in the 2001-2008 BMW 750i, including their types, locations, and functions. Understand the role of each sensor in maintaining emissions control and engine performance.
Oxygen Sensors
- Two oxygen sensors are used: one upstream (before the catalytic converter) and one downstream (after the catalytic converter)
- Oxygen sensors monitor the oxygen levels in the exhaust gases
- Voltage range: 0.1V to 0.9V
- Heated oxygen sensors (HO2S) are used for faster warm-up
- Located near the exhaust manifold and catalytic converter
Temperature Sensors
- Engine coolant temperature (ECT) sensor monitors engine temperature
- Intake air temperature (IAT) sensor monitors air intake temperature
- Operating range: -40°C to 120°C
- Resistance decreases as temperature increases
- Located in the engine block and intake manifold
Airflow Sensors
- Mass airflow sensor (MAF) measures air intake volume
- Hot wire type sensor
- Operating range: 0-5 volts
- Located between the air filter and throttle body
- Ensures accurate fuel injection calculations
Technical Specifications
This section provides detailed technical specifications for each emissions sensor, including part numbers, operating ranges, and compatibility. Use this information for accurate diagnostics and replacement.
Technical Specifications
This section provides detailed technical specifications for each emissions sensor, including part numbers, operating ranges, and compatibility. Use this information for accurate diagnostics and replacement.
Oxygen Sensor Specifications
- Part number: 11781438147 (upstream), 11781438148 (downstream)
- Voltage range: 0.1V to 0.9V
- Response time: <100ms
- Operating temperature: -20°C to 800°C
- Compatible with BMW 750i (E65/E66)
Temperature Sensor Specifications
- Part number: 11781430147 (ECT), 11781430148 (IAT)
- Resistance at 20°C: 2.5kΩ (ECT), 10kΩ (IAT)
- Operating range: -40°C to 120°C
- Accuracy: ±2.5%
- Thread size: M12 x 1.5 (ECT), M10 x 1.0 (IAT)
Airflow Sensor Specifications
- Part number: 11781436147
- Voltage range: 0-5V
- Airflow range: 0-1000 kg/h
- Frequency: 100Hz to 10kHz
- Connector type: 5-pin
Installation and Maintenance
This section provides guidelines for installing, maintaining, and troubleshooting emissions sensors. Follow these procedures to ensure proper sensor function and system performance.
Installation and Maintenance
This section provides guidelines for installing, maintaining, and troubleshooting emissions sensors. Follow these procedures to ensure proper sensor function and system performance.
Installation Best Practices
- Ensure all electrical connections are clean and secure
- Use torque wrench for sensor installation (10Nm for oxygen sensors)
- Avoid touching sensor elements to prevent contamination
- Replace sensors with OEM or equivalent parts
- Clear fault codes after installation
Maintenance Tips
- Inspect sensors every 30,000 miles
- Clean or replace air filter regularly
- Check for exhaust leaks near oxygen sensors
- Use scan tool to monitor sensor performance
- Replace sensors every 100,000 miles or as needed
Troubleshooting Common Issues
- Faulty oxygen sensor: P0130-P0199 codes
- Faulty temperature sensor: P0110-P0118 codes
- Faulty airflow sensor: P0100-P0103 codes
- Check wiring and connectors for damage
- Compare sensor readings with manufacturer specifications
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Component Specifications
Overview
- Type
- Oxygen (O2) Sensors
- Configuration
- Dual Bank
- Platform
- BMW E66
- Material
- Ceramic with Platinum tip
- Location
- Exhaust system (Pre and Post Catalyst)
- Function
- Monitor oxygen levels in exhaust gases
Dimensions
- Sensor Length
- 3.5 in (89 mm)
- Sensor Diameter
- 1.5 in (38 mm)
- Thread Size
- M18x1.5
- Thread Length
- 1.5 in (38 mm)
- Wiring Harness Length
- 6 ft (1.83 m)
- Electrical Connector Type
- 6-pin OEM
Materials
- Sensing Element
- Ceramic with Platinum tip
- Housing
- Stainless Steel (Heat Resistant)
- Electrical Connector
- High-Temperature Plastic
- Wiring Insulation
- Oxygen-Resistant Silicone
Features
- Sensor Types
-
- Wide-Band Oxygen Sensor
- Heated Oxygen Sensor (H2S)
- Titania Oxide Sensor
- Signal Output
-
- 0-5V Analog Output
- Frequency Modulated Signal
- Operating Characteristics
-
- Operating Temperature: -40°F to 1200°F (-40°C to 649°C)
- Response Time: <100ms
- Accuracy: ±1% Full Scale
- Compatibility
-
- BMW DME (Digital Motor Electronics)
- CAN Bus Communication
- Secondary Air Injection System
Safety Features
- Self Diagnostic Capability
-
- Internal fault detection
- MIL (Malfunction Indicator Light) activation
- Fault code storage (OBD-II)
- Over Temperature Protection
- Thermal cutoff at 1200°F (649°C)
- Corrosion Resistance
- Stainless steel housing with protective coating
Comfort Features
- Emissions Reduction
-
- Reduces CO, HC, and NOx emissions
- Improves fuel efficiency
- Minimizes cold-start emissions
- Smooth Operation
-
- Maintains optimal air-fuel ratio
- Reduces engine knocking or pinging
- Ensures smooth idle and acceleration
Accessories
- installation Kit
-
- Wiring harness adapter
- Mounting bracket
- O2 sensor socket
- Diagnostic Tools
-
- OBD-II scanner
- Multimeter for troubleshooting
- Oxygen sensor simulator
- Replacement Parts
-
- Aftermarket sensor options
- OE (Original Equipment) sensor
- Sensor cleaning solution
Maintenance
- Service interval
- Replace every 100,000 miles (160,000 km)
- inspection Interval
- Check every 50,000 miles (80,000 km)
- Maintenance Notes
-
- Avoid exposure to silicone-based lubricants
- Do not clean sensor element with abrasive materials
- Use proper torque specification for installation
- Service Items
-
- Inspect wiring and connections
- Check for contamination or damage
- Test sensor output voltage
Warranty
- Standard Warranty
- Miles: 24,000 milesYears: 2 yearsCoverage: Parts and Labor
- Extended Warranty
- Miles: 50,000 milesYears: 5 yearsCoverage: Parts Only
- Emissions Warranty
- Miles: 150,000 milesYears: 15 yearsCoverage: Catalytic Converter and Sensors
- Manufacturers Defect
- Miles: Unlimited milesYears: 12 yearsCoverage: Corrosion Perforation
Production Details
- Manufacturer
- Bosch
- Manufacturing Process
-
- Laser-welded housing
- Platinum tip coating
- High-temperature ceramic element
- Quality Control
- inspection: 100% bench testingCertifications: ISO 9001, IATF 16949, OE Qualified
- Sustainability Practices
-
- Recyclable materials
- Low-VOC manufacturing
- Energy-efficient production
- Production Metrics
- Annual Production: 1,000,000+ unitsFailure Rate: <1%Warranty Claim Rate: <0.5%
Service Information for Emissions Sensors Service
Maintenance and service requirements specific to emissions sensors
- Inspect O2 sensor wiring and connections
- Check for contamination or physical damage
- Test sensor output voltage
- Clear any fault codes related to O2 sensors
Recommended during regular oil change service
- Replace O2 sensors if faulty or contaminated
- Inspect catalytic converter efficiency
- Check secondary air injection system
- Perform smoke test for exhaust leaks
Major service interval, requires specialized tools
- Advanced diagnostic testing
- Check for sensor degradation
- Inspect wiring harness for wear
- Test system performance under load
Advanced service interval, may require shop visit
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the emissions sensors for the 2001-2008 BMW 750i?
What are the technical specifications of the emissions sensors for the 2001-2008 BMW 750i?
The emissions sensors for the 2001-2008 BMW 750i include oxygen sensors, temperature sensors, and air-fuel ratio sensors. These sensors are compatible with models E66 and E67. The oxygen sensors operate within a voltage range of 0.1V to 0.9V, and the temperature sensors function between -40°F to 250°F. Ensure compatibility with your specific model for optimal performance.
Q2 What are the maintenance requirements for the emissions sensors?
What are the maintenance requirements for the emissions sensors?
Emissions sensors should be inspected every 15,000 miles. Cleaning is recommended every 30,000 miles, and replacement is suggested every 50,000 to 80,000 miles. Use a soft brush and appropriate cleaner to avoid damage. Regular maintenance ensures accurate readings and prevents potential issues.
Q3 How do I install or replace an emissions sensor?
How do I install or replace an emissions sensor?
To replace an emissions sensor, start by disconnecting the battery. Locate the sensor, typically near the exhaust manifold. Remove the mounting bolts, then disconnect the electrical connector. Install the new sensor by reversing the steps, ensuring it's securely fastened and the connector is properly attached.
Q4 How do I troubleshoot common issues with emissions sensors?
How do I troubleshoot common issues with emissions sensors?
Common issues include faulty readings or sensor failure. Check for codes with an OBD-II scanner. Inspect connectors for damage or corrosion. Clean the sensor with a wire brush if dirty. If issues persist, replace the sensor. Always refer to a repair manual for specific procedures.
Q5 How can I optimize the performance of my emissions sensors?
How can I optimize the performance of my emissions sensors?
Regular cleaning and inspection can enhance performance. Ensure proper fuel quality and avoid using additives that may damage sensors. Keep your exhaust system in good condition to prevent contamination. Upgrading to high-quality sensors can also improve reliability and accuracy.
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 750i Emissions Sensors Service Manual
Coming SoonCovers installation, diagnostics, and troubleshooting for emissions sensors in 2001-2008 models.
Technical Service Bulletin: Emissions Sensor Updates
Coming SoonDetails diagnostics and repairs for emissions sensor-related issues in 2001-2008 BMW 750i.
BMW Parts Catalog: Emissions Sensors
Coming SoonLists part numbers and specifications for emissions sensors in 2001-2008 models.
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