BMW 335i 2012-2018 Emissions & Sensors Specifications
Comprehensive technical specifications for the emissions sensors system in the 2012-2018 BMW 335I, including O2 sensors, NOx sensors, and particulate matter sensors. Ideal for technicians and enthusiasts.
Overview Specifications
Comprehensive description of the emissions_sensors specifications for the 2012-2018 BMW 335I, 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
Catalytic Converter Temp Range
-40°C to 900°C
Available Specifications
Oxygen (O2) Sensors
Details about the oxygen sensors used in the 2012-2018 BMW 335I, including their role in monitoring exhaust gas oxygen levels.
Oxygen (O2) Sensors
Details about the oxygen sensors used in the 2012-2018 BMW 335I, including their role in monitoring exhaust gas oxygen levels.
Front O2 Sensor Specifications
- Located in the exhaust manifold, upstream of the catalytic converter
- Operating temperature range: -40°C to 900°C
- Output voltage range: 0.1V to 0.9V
- Response time: <100ms
- Heater resistance: 6-8 ohms at 20°C
Rear O2 Sensor Specifications
- Located downstream of the catalytic converter
- Operating temperature range: -40°C to 850°C
- Output voltage range: 0.1V to 0.9V
- Response time: <120ms
- Heater resistance: 6-8 ohms at 20°C
Note: The rear O2 sensor is critical for monitoring catalytic converter efficiency.
Nitrogen Oxide (NOx) Sensors
Technical details about the NOx sensors used to measure nitrogen oxide levels in the exhaust system.
Nitrogen Oxide (NOx) Sensors
Technical details about the NOx sensors used to measure nitrogen oxide levels in the exhaust system.
NOx Sensor Specifications
- Located in the exhaust system, downstream of the SCR catalyst
- Operating temperature range: -40°C to 950°C
- Measurement range: 0-2000 ppm NOx
- Accuracy: ±5% of measured value
- Heater power consumption: 12W at 12V
NOx Sensor Diagnostics
- Integrated self-diagnostic capabilities
- Error codes stored in the ECU for fault detection
- Typical lifespan: 100,000 miles
- Replacement interval: As per fault codes or performance degradation
Note: NOx sensors are sensitive to contamination and require periodic inspection.
Temperature Sensors
Information about the temperature sensors used to monitor exhaust gas and catalytic converter temperatures.
Temperature Sensors
Information about the temperature sensors used to monitor exhaust gas and catalytic converter temperatures.
Exhaust Gas Temperature (EGT) Sensor
- Located in the exhaust manifold and downpipe
- Operating temperature range: -40°C to 1000°C
- Resistance range: 100-2000 ohms
- Accuracy: ±2% of measured value
- Response time: <200ms
Catalytic Converter Temperature Sensor
- Mounted on the catalytic converter housing
- Operating temperature range: -40°C to 900°C
- Resistance range: 100-1500 ohms
- Accuracy: ±2% of measured value
- Response time: <250ms
Note: Critical for preventing catalytic converter overheating.
Mass Air Flow (MAF) Sensor
Details about the MAF sensor, which measures the volume and density of air entering the engine.
Mass Air Flow (MAF) Sensor
Details about the MAF sensor, which measures the volume and density of air entering the engine.
MAF Sensor Specifications
- Located in the intake air duct
- Operating temperature range: -40°C to 120°C
- Output signal: 0-5V analog
- Measurement range: 0-500 kg/h
- Accuracy: ±2% of measured value
MAF Sensor Maintenance
- Requires periodic cleaning to prevent contamination
- Typical lifespan: 150,000 miles
- Replacement interval: As per fault codes or performance degradation
- Calibration required after replacement
Note: A faulty MAF sensor can significantly impact emissions and engine performance.
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Component Specifications
Oxygen Sensors
- Part Number
- 11787586953
- Type
- wideband zirconia
- Location
-
- pre-catalytic converter
- post-catalytic converter
- Operating Temperature
- 300°C to 850°C
- Voltage Range
- 0.1V to 0.9V
- Response Time
- less than 100ms
- Tolerance
- ±2% of reading
Nitrogen Oxide Sensors
- Part Number
- 11747838572
- Type
- electrochemical
- Location
- post-catalytic converter
- Operating Temperature
- 200°C to 500°C
- Measurement Range
- 0 ppm to 1000 ppm
- Accuracy
- ±5 ppm
- Response Time
- less than 200ms
Mass Air Flow Sensor
- Part Number
- 13627563172
- Type
- hot-film anemometer
- Location
- intake air duct
- Measurement Range
- 0 kg/h to 1000 kg/h
- Accuracy
- ±2% of reading
- Operating Temperature
- -40°C to 120°C
- Output Signal
- 0V to 5V
Exhaust Gas Temperature Sensors
- Part Number
- 11747838573
- Type
- thermocouple
- Location
-
- pre-catalytic converter
- post-catalytic converter
- Measurement Range
- -40°C to 1000°C
- Accuracy
- ±5°C
- Response Time
- less than 500ms
Catalytic Converter Efficiency Sensor
- Part Number
- 11787586954
- Type
- oxygen storage capacity sensor
- Location
- integrated in catalytic converter
- Operating Temperature
- 300°C to 800°C
- Measurement Range
- 0% to 100% efficiency
- Accuracy
- ±3%
- Response Time
- less than 150ms
Fuel Tank Pressure Sensor
- Part Number
- 16137183745
- Type
- piezoresistive
- Location
- fuel tank
- Measurement Range
- -15 kPa to 50 kPa
- Accuracy
- ±0.5 kPa
- Operating Temperature
- -40°C to 120°C
- Output Signal
- 0.5V to 4.5V
Evaporative Emissions System Sensor
- Part Number
- 16137183746
- Type
- pressure sensor
- Location
- evaporative emissions system
- Measurement Range
- -10 kPa to 10 kPa
- Accuracy
- ±0.2 kPa
- Operating Temperature
- -40°C to 85°C
- Output Signal
- 0.5V to 4.5V
Differential Pressure Sensor
- Part Number
- 11747838574
- Type
- piezoresistive
- Location
- diesel particulate filter (if applicable)
- Measurement Range
- 0 kPa to 50 kPa
- Accuracy
- ±0.5 kPa
- Operating Temperature
- -40°C to 150°C
- Output Signal
- 0.5V to 4.5V
Ambient Air Temperature Sensor
- Part Number
- 65816938817
- Type
- thermistor
- Location
- front bumper area
- Measurement Range
- -40°C to 60°C
- Accuracy
- ±1°C
- Response Time
- less than 10s
- Output Signal
- 0V to 5V
Engine Coolant Temperature Sensor
- Part Number
- 13621433076
- Type
- thermistor
- Location
- engine coolant outlet
- Measurement Range
- -40°C to 140°C
- Accuracy
- ±2°C
- Response Time
- less than 30s
- Output Signal
- 0V to 5V
Service Information Service
Detailed service requirements and schedules for emissions sensors
- Inspect oxygen sensors for contamination
- Check wiring and connectors for damage
- Verify sensor readings with diagnostic tool
Replace sensors if readings are out of tolerance
- Replace oxygen sensors as preventive maintenance
- Inspect catalytic converter efficiency sensor
- Check exhaust gas temperature sensors
Follow BMW-recommended replacement intervals
- Replace all emissions sensors as preventive maintenance
- Inspect and clean mass air flow sensor
- Verify evaporative emissions system sensor functionality
Use only genuine BMW parts for replacements
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the function of the oxygen sensor in the 2012-2018 BMW 335i?
What is the function of the oxygen sensor in the 2012-2018 BMW 335i?
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 and reduced emissions. 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 in a BMW 335i?
How often should the emissions sensors be replaced in a BMW 335i?
BMW recommends inspecting the emissions sensors every 60,000 miles. However, replacement intervals may 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.
Q3 What are the symptoms of a failing NOx sensor in the 335i?
What are the symptoms of a failing NOx sensor in the 335i?
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 is critical for monitoring nitrogen oxide levels in the exhaust system, particularly in vehicles equipped with Selective Catalytic Reduction (SCR) systems.
Q4 Can I replace the emissions sensors myself, or should I consult a professional?
Can I replace the emissions sensors myself, or should I consult a professional?
While it is possible to replace emissions sensors yourself, it is recommended to consult a professional technician. Proper installation requires specialized tools, such as an O2 sensor socket, and knowledge of the vehicle's exhaust system. Incorrect installation can lead to damage or improper sensor function.
Q5 What is the difference between upstream and downstream oxygen sensors?
What is the difference between upstream and downstream oxygen sensors?
Upstream oxygen sensors (pre-catalytic converter) monitor the air-fuel ratio for combustion optimization, while downstream sensors (post-catalytic converter) assess the efficiency of the catalytic converter. Both sensors are essential for maintaining emissions compliance and engine performance.
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 Sensor Replacement Guide
Coming SoonStep-by-step instructions for replacing emissions sensors in the 2012-2018 BMW 335i, including torque specifications and safety precautions.
Diagnosing Emissions Sensor Fault Codes
Coming SoonA comprehensive guide to interpreting and troubleshooting common fault codes related to emissions sensors in the BMW 335i.
BMW Genuine Parts Catalog
Coming SoonAccess the official BMW parts catalog to find genuine emissions sensors and related components for your 335i.
Emissions System Maintenance Tips
Coming SoonLearn how to maintain your BMW 335i's emissions system to ensure optimal performance and compliance with environmental regulations.
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