BMW 340i 2012-2018 Emissions & Sensors Specifications
Find detailed emissions sensor specifications for the 2012-2018 BMW 340i. Includes sensor types, locations, and repair information. Perfect for technicians and DIY enthusiasts.
Emissions Sensors Specifications Overview Specifications
This document provides detailed specifications, technical details, and operational guidelines for the emissions sensors of the 2012-2018 BMW 340i. It is designed to assist technicians, mechanics, and enthusiasts in understanding, diagnosing, and maintaining the emissions control systems. The document is organized into sections for easy navigation, with key specifications highlighted for quick reference.
How to Use
Use the search functionality to find specific emissions sensor details by keyword, part number, or sensor type. Enter terms like 'oxygen sensor' or 'exhaust gas temperature sensor' to locate relevant information.
Navigate through the sections using the table of contents or by scrolling through the document. Each section is divided into subsections for easy access to specific topics such as technical specifications, installation, and troubleshooting.
Key Specifications
Oxygen Sensor Type
Titanium Zirconia
Exhaust Gas Temperature Range
-40°C to 1,000°C
Mass Airflow Sensor Voltage
0-5.0V
Fuel Pressure Sensor Range
0-10 bar
Catalyst Efficiency Threshold
>95% Efficiency
Available Specifications
Emissions Sensors Overview
This section provides a general overview of the emissions sensors used in the 2012-2018 BMW 340i, including their purpose, types, and locations within the vehicle. It serves as a foundational guide for understanding the emissions control system.
Emissions Sensors Overview
This section provides a general overview of the emissions sensors used in the 2012-2018 BMW 340i, including their purpose, types, and locations within the vehicle. It serves as a foundational guide for understanding the emissions control system.
Sensor Types and Functions
- Oxygen Sensors (Lambda Probes): Measure exhaust gas oxygen levels to optimize fuel injection.
- Exhaust Gas Temperature Sensors: Monitor exhaust gas temperature to prevent catalyst damage.
- Mass Airflow Sensors: Measure air intake to calculate fuel injection quantities.
- Fuel Pressure Sensors: Monitor fuel system pressure for engine performance optimization.
- Catalyst Efficiency Sensors: Monitor catalytic converter performance to ensure emissions compliance.
Sensor Locations
- Oxygen Sensors: Located in the exhaust system before and after the catalytic converter.
- Exhaust Gas Temperature Sensors: Installed near the turbocharger and catalytic converter.
- Mass Airflow Sensors: Positioned in the intake duct between the air filter and engine.
- Fuel Pressure Sensors: Integrated into the fuel injector rail or fuel pump assembly.
- Catalyst Efficiency Sensors: Mounted in the exhaust system downstream of the catalytic converter.
Technical Specifications
This section provides detailed technical specifications for each emissions sensor, including part numbers, operating ranges, and electrical characteristics. It is essential for diagnostic and replacement procedures.
Technical Specifications
This section provides detailed technical specifications for each emissions sensor, including part numbers, operating ranges, and electrical characteristics. It is essential for diagnostic and replacement procedures.
Oxygen Sensor Specifications
- Part Number: 11787555646 (Pre-Catalytic Converter)
- Part Number: 11787555647 (Post-Catalytic Converter)
- Operating Range: 0-1.0 Volts
- Response Time: <100ms
- Operating Temperature: -40°C to 900°C
- Heater Resistance: 4.5Ω ± 10%
Exhaust Gas Temperature Sensor Specifications
- Part Number: 13547604351
- Operating Range: 0-5.0 Volts
- Temperature Range: -40°C to 1,000°C
- Response Time: <50ms
- Supply Voltage: 5.0V
- Signal Output: Linear analog signal
Installation and Maintenance
This section outlines the procedures for installing, maintaining, and testing emissions sensors. Proper installation and maintenance are critical for ensuring accurate sensor performance and overall engine efficiency.
Installation and Maintenance
This section outlines the procedures for installing, maintaining, and testing emissions sensors. Proper installation and maintenance are critical for ensuring accurate sensor performance and overall engine efficiency.
Installation Guidelines
- Always use genuine BMW replacement sensors for compatibility and performance.
- Ensure all electrical connectors are clean and securely connected.
- Apply a thin layer of high-temperature grease to sensor threads.
- Tighten sensors to the specified torque: 30 Nm for oxygen sensors, 20 Nm for temperature sensors.
- After installation, clear fault codes and test drive the vehicle.
Maintenance and Testing
- Inspect sensor wiring and connectors for damage or corrosion.
- Use a multimeter to test sensor voltage and resistance.
- Perform a vacuum test to check for leaks in the intake system.
- Monitor engine performance and emissions-related fault codes.
- Replace sensors at recommended intervals or when faulty codes are detected.
Troubleshooting and Diagnostics
This section provides guidance for diagnosing common issues with emissions sensors, including fault codes, symptoms, and repair procedures. It is essential for resolving performance and emissions-related problems.
Troubleshooting and Diagnostics
This section provides guidance for diagnosing common issues with emissions sensors, including fault codes, symptoms, and repair procedures. It is essential for resolving performance and emissions-related problems.
Common Fault Codes
- P0130: Oxygen Sensor Circuit Malfunction (Bank 1, Sensor 1)
- P0155: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
- P0037: Oxygen Sensor Heater Circuit Low Voltage (Bank 1, Sensor 1)
- P0059: Heater Resistance (Bank 1, Sensor 1)
- P0141: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
Diagnostic Procedures
- Scan the vehicle using a BMW-specific diagnostic tool (e.g., ISTA/D)
- Monitor live sensor data for irregularities
- Perform a visual inspection of sensor wiring and connectors
- Test sensor resistance and voltage using a multimeter
- Replace faulty sensors and clear fault codes
Search Specifications
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Component Specifications
Overview
- Type
- Lambda Sensor
- Configuration
- Dual Sensor Setup
- Platform
- N20/N26 Engine
- Material
- Ceramic Element with Stainless Steel Housing
- Location
- Exhaust System (Pre and Post Catalytic Converter)
- Manufacturer
- Bosch
Dimensions
- Length
- 4.5 inches (114.3 mm)
- Diameter
- 0.75 inches (19.05 mm)
- Thread Size
- M18 x 1.5
- Electrical Connector Length
- 12 inches (304.8 mm)
- Housing Thickness
- 0.0625 inches (1.5875 mm)
- Element Diameter
- 0.25 inches (6.35 mm)
- Connector Pitch
- 0.1 inches (2.54 mm)
Materials
- Sensing Element
- Ceramic (Zirconia)
- Housing
- Stainless Steel (Grade 304)
- Electrical Connector
- High-Temperature Plastic
- Wiring
- Copper with Teflon Insulation
- Gasket
- Viton Rubber
Features
- Sensor Types
-
- Oxygen (O2) Sensor
- Temperature Sensor
- Heated Sensor Element
- Wideband Sensor Capability
- Self-Diagnostic Functionality
- Monitoring Capabilities
-
- Exhaust Gas Oxygen Levels
- Temperature Monitoring
- Heater Performance
- Sensor Fault Detection
- Catalyst Efficiency
- Communication Protocols
-
- CAN (Controller Area Network)
- LIN (Local Interconnect Network)
- PWM (Pulse Width Modulation) Output
- Analog Voltage Output
- installation Features
-
- Threaded Installation
- Plug-and-Play Connector
- Integrated Heat Shield
- Waterproof Housing
- Anti-Seizing Coating
Safety Features
- Fault Detection
-
- Internal Short Circuit Protection
- Open Circuit Detection
- Over-Voltage Protection
- Under-Voltage Warning
- Protection Mechanisims
-
- Heat Shield for Thermal Protection
- Waterproof Housing (IP67 Rated)
- Vibration-Resistant Mounting
- EMI/RFI Shielding
- Warning Systems
-
- MIL (Malfunction Indicator Light) Activation
- Diagnostic Trouble Code Generation
- Audible Warning Signal
- Real-Time Data Monitoring
- Compliance
-
- EPA Certified
- CARB Compliant
- EURO 5 Emissions Standard
- OBD-II (On-Board Diagnostics II) Compliant
Comfort Features
- Reduced Emissions
-
- Lower Emissions for Cleaner Air
- Reduced Environmental Impact
- Improved Fuel Efficiency
- Smoother Engine Operation
- Extended Maintenance
-
- Longer Service Intervals
- Reduced Maintenance Costs
- Improved Reliability
- Less Frequent Repairs
- Driver Feedback
-
- Real-Time Emissions Monitoring
- Driver Information Display
- Eco-Driving Feedback
- Efficiency Optimization
- Noise Reduction
-
- Quieter Engine Operation
- Reduced Exhaust Noise
- Smoother Acceleration
- Minimized Vibration
Accessories
- installation Kit
-
- Sensor Socket
- Wiring Harness Adapter
- Thread Lubricant
- Gasket Set
- Diagnostic Tools
-
- OBD-II Scanner
- Sensor Simulator
- Multimeter
- Live Data Stream Software
- Replacement Parts
-
- Sensor Element Replacement Kit
- Housing Replacement
- Connector Repair Kit
- Gasket Seal Replacement
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Recommended Procedures
-
- Sensor Cleaning
- Connector Inspection
- Housing Tightening
- Wiring Harness Check
- Replacement interval
- Every 100,000 miles or 10 years
- Notes
-
- Use only manufacturer-approved replacement parts
- Avoid exposure to silicone-based lubricants
- Ensure proper torque specifications during installation
- Monitor for contamination from fuel or oil
Warranty
- New Vehicle
- Miles: 50000Years: 4Coverage: Parts and Labor
- Emissions Warranty
- Miles: 150000Years: 15Coverage: Defects in Materials and Workmanship
- Parts Warranty
- Miles: 12000Years: 1Coverage: Replacement Parts
- Accessories Warranty
- Miles: 36000Years: 3Coverage: Accessories and Installation
Production Details
- Manufacturer info
- Name: BoschLocation: GermanyCertifications: ISO 9001, IATF 16949, ISO 14001
- Manufacturing Process
-
- Precision Ceramic Element Fabrication
- High-Temperature Housing Molding
- Automated Welding and Assembly
- Stringent Quality Control Testing
- Quality Control
- inspection: 100% Visual and Functional TestingTesting: Environmental Chamber TestingCertification: Individual Sensor Calibration
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Production
- Low Emission Manufacturing Process
- Waste Reduction Programs
- Production Metrics
- Annual Production: 1,000,000 unitsFailure Rate: <1%Mtbf: 10,000 hoursWarranty Claim Rate: <2%
Service Information for Emissions Sensors Service
Maintenance and service requirements specific to the emissions sensors
- Inspect sensor connectors for corrosion
- Check sensor wiring for damage
- Clean sensor elements if necessary
- Verify proper sensor operation
- Check for fault codes related to emissions sensors
Use only approved cleaning solutions for sensor elements
- Replace sensor gaskets
- Inspect sensor housings for leaks
- Check sensor heater operation
- Verify electrical connector tightness
- Update sensor software if available
Ensure proper torque specifications for sensor installation
- Replace emissions sensors
- Inspect catalytic converter efficiency
- Check exhaust system for leaks
- Perform thorough system diagnostic test
- Verify emissions compliance
Use only manufacturer-approved replacement sensors
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications and compatibility of emissions sensors for the 2012-2018 BMW 340i?
What are the technical specifications and compatibility of emissions sensors for the 2012-2018 BMW 340i?
The emissions sensors for the 2012-2018 BMW 340i include oxygen sensors, NOx sensors, and exhaust gas temperature sensors. These sensors are compatible with the N20 and N26 engines. Technical specifications include operating temperatures up to 1,000°C, threaded M18x1.5 fittings, and electrical connectors compatible with the vehicle's ECU. Ensure compatibility with your specific model year and engine configuration before installation.
Q2 What are the maintenance requirements for emissions sensors?
What are the maintenance requirements for emissions sensors?
Emissions sensors should be inspected every 30,000 to 50,000 miles. Cleaning is not recommended as it may damage the sensor. Replace sensors if fault codes indicate failure. Use only BMW-approved or OEM equivalent sensors to maintain performance and compliance. Follow the manufacturer's maintenance schedule for optimal functionality.
Q3 How do I install or replace emissions sensors?
How do I install or replace emissions sensors?
Start by disconnecting the battery and locating the sensor. Use a wrench to remove the sensor from the exhaust system. Install the new sensor by hand tightening it, then torque it to specifications. Reconnect the electrical connector and clear any fault codes using a scan tool. Test drive the vehicle to ensure proper operation.
Q4 How do I troubleshoot common issues with emissions sensors?
How do I troubleshoot common issues with emissions sensors?
Check for fault codes using an OBD-II scanner. Common issues include faulty readings, wiring problems, or contamination. Inspect the sensor for physical damage or soot buildup. Clean the area around the sensor before replacement. If issues persist, consult a professional mechanic for further diagnosis.
Q5 How can I optimize the performance of emissions sensors?
How can I optimize the performance of emissions sensors?
Regular maintenance, such as inspecting and replacing sensors as needed, ensures optimal performance. Use high-quality fuel and avoid aggressive driving habits that can contaminate sensors. Keep the exhaust system clean and free of leaks to maintain accurate sensor readings.
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 340i Service Manual
Coming SoonComprehensive guide covering emissions sensor installation, maintenance, and troubleshooting.
Technical Bulletin - Emissions Sensor Update
Coming SoonLatest updates and specifications for emissions sensors in 2012-2018 models.
BMW Parts Catalog
Coming SoonDetailed listing of emissions sensors and compatible parts for the 340i.
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Technical Information
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