BMW M6 2012-2018 Emissions & Sensors Specifications
BMW M6 2012-2018

BMW M6 2012-2018 Emissions & Sensors Specifications

Detailed technical specifications and diagnostic information for the emissions sensors system in the 2012-2018 BMW M6, including O2 sensors, NOx sensors, and particulate matter sensors.

Updated

Overview Specifications

Comprehensive description of the emissions_sensors specifications for the 2012-2018 BMW M6, including key features, measurements, and technical details

How to Use

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

O2 Sensor Heater Resistance

6-10 ohms at 20°C

Available Specifications

Oxygen (O2) Sensors

Details about the oxygen sensors used in the 2012-2018 BMW M6, including their role in monitoring exhaust gas oxygen levels.

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: Rear O2 sensors are primarily used to monitor catalytic converter efficiency.

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, post-catalytic converter
  • Operating temperature range: -40°C to 950°C
  • Measurement range: 0-2000 ppm NOx
  • Accuracy: ±5% of reading
  • Heater power consumption: 12W at 12V
NOx Sensor Diagnostics
  • Integrated self-diagnostic capabilities
  • Error codes stored in the ECU for NOx sensor faults
  • Typical lifespan: 100,000 miles
  • Replacement interval: As per fault codes or performance degradation

Note: NOx sensors are critical for compliance with emissions regulations.

Exhaust Gas Temperature (EGT) Sensors

Information about the EGT sensors used to monitor exhaust gas temperatures in the 2012-2018 BMW M6.

EGT Sensor Specifications
  • Located in the exhaust manifold and downpipe
  • Operating temperature range: -40°C to 1000°C
  • Output signal: 0-5V analog
  • Response time: <200ms
  • Accuracy: ±2% of reading
EGT Sensor Placement
  • Pre-turbo EGT sensor monitors turbine inlet temperature
  • Post-catalytic converter EGT sensor ensures catalytic converter efficiency
  • Dual EGT sensors for turbocharged models
  • Critical for preventing engine and turbocharger damage

Note: EGT sensors are essential for protecting high-performance components.

Mass Air Flow (MAF) Sensor

Details about the MAF sensor used to measure 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 reading
MAF Sensor Maintenance
  • Regular cleaning recommended to prevent contamination
  • Typical lifespan: 150,000 miles
  • Replacement interval: As per fault codes or performance degradation
  • Critical for accurate air-fuel ratio calculation

Note: A faulty MAF sensor can lead to poor engine performance and increased emissions.

Component Specifications

Oxygen Sensors

Part Number
11787586945
Type
Wideband zirconia oxygen sensor
Location
  • Upstream of catalytic converter
  • Downstream of 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
NOx sensor
Location
Downstream of SCR catalyst
Operating Temperature
200°C to 900°C
Measurement Range
0 ppm to 1000 ppm
Accuracy
±5 ppm
Response Time
Less than 500ms

Particulate Matter Sensors

Part Number
11747838573
Type
PM sensor
Location
Downstream of DPF
Operating Temperature
150°C to 600°C
Measurement Range
0 mg/m³ to 50 mg/m³
Accuracy
±0.5 mg/m³
Response Time
Less than 1 second

Exhaust Gas Temperature Sensors

Part Number
11747838574
Type
Thermocouple-based EGT sensor
Location
  • Upstream of turbocharger
  • Downstream of DPF
Operating Temperature
-40°C to 1000°C
Accuracy
±2°C
Response Time
Less than 200ms

Mass Air Flow Sensor

Part Number
13627838575
Type
Hot-film MAF sensor
Location
Intake air duct
Measurement Range
0 kg/h to 1000 kg/h
Accuracy
±2% of reading
Operating Temperature
-40°C to 120°C
Response Time
Less than 50ms

Catalytic Converter Efficiency Sensors

Part Number
11747838576
Type
Oxygen storage capacity sensor
Location
Integrated into catalytic converter
Operating Temperature
300°C to 800°C
Measurement Range
0% to 100% efficiency
Accuracy
±3%
Response Time
Less than 300ms

Ambient Air Temperature Sensor

Part Number
65829238577
Type
NTC thermistor
Location
Front bumper area
Operating Temperature
-40°C to 85°C
Accuracy
±1°C
Response Time
Less than 10 seconds

Fuel Tank Pressure Sensor

Part Number
16147838578
Type
Piezoresistive pressure sensor
Location
Fuel tank
Measurement Range
-10 kPa to 50 kPa
Accuracy
±0.5 kPa
Operating Temperature
-40°C to 120°C
Response Time
Less than 100ms

Evaporative Emissions System Sensor

Part Number
16147838579
Type
Pressure sensor
Location
EVAP canister
Measurement Range
-5 kPa to 5 kPa
Accuracy
±0.2 kPa
Operating Temperature
-40°C to 85°C
Response Time
Less than 50ms

Diagnostic Specifications

Fault Codes
  • P0130
  • P0135
  • P0141
  • P0420
  • P0430
  • P2201
Diagnostic Tool
BMW ISTA/D
Readiness Monitors
  • Oxygen sensor
  • Catalyst
  • Evaporative system
  • EGR system
Test Conditions
  • Engine at operating temperature
  • Closed-loop fuel control active
Tolerances
Oxygen Sensor Voltage: 0.1V to 0.9V
NOx Sensor Ppm: ±5 ppm
PM Sensor Mg M3: ±0.5 mg/m³

Service Information Service

Detailed service requirements and schedules for emissions sensors

15000
12
  • Inspect oxygen sensors for contamination
  • Check NOx sensor readings for accuracy
  • Verify PM sensor functionality
  • Inspect wiring and connectors for damage

Replace sensors if readings are outside specified tolerances

60000
48
  • Replace oxygen sensors as preventive maintenance
  • Test NOx sensor response time
  • Clean PM sensor probe
  • Inspect EGT sensor for thermal degradation

Use only OEM parts for replacement

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What is the function of the NOx sensor in the 2012-2018 BMW M6 emissions system?

The NOx (Nitrogen Oxide) sensor monitors the levels of nitrogen oxides in the exhaust gases. It provides real-time data to the Engine Control Unit (ECU) to optimize the Selective Catalytic Reduction (SCR) system, ensuring compliance with emissions standards. The sensor operates at a temperature range of 200°C to 850°C and has a response time of less than 1 second.

Q2

How often should the oxygen (O2) sensors be replaced in the BMW M6?

Oxygen sensors in the BMW M6 typically have a lifespan of 60,000 to 90,000 miles. However, this can vary based on driving conditions and fuel quality. Symptoms of a failing O2 sensor include poor fuel economy, rough idling, and increased emissions. Regular diagnostic checks are recommended to ensure optimal performance.

Q3

What is the voltage range for the lambda sensors in the BMW M6?

The lambda sensors (wideband O2 sensors) in the BMW M6 operate within a voltage range of 0.1V to 4.9V. A voltage below 0.1V indicates a lean mixture, while a voltage above 4.9V indicates a rich mixture. These sensors are critical for maintaining the air-fuel ratio at the stoichiometric level (14.7:1).

Q4

Can a faulty emissions sensor trigger a check engine light in the BMW M6?

Yes, a faulty emissions sensor, such as the NOx, O2, or lambda sensor, can trigger the check engine light (CEL). The ECU continuously monitors these sensors for irregularities. If a sensor fails or provides out-of-range data, the ECU will log a fault code (e.g., P0135 for O2 sensor heater circuit malfunction) and illuminate the CEL.

Q5

What is the replacement procedure for the NOx sensor in the BMW M6?

Replacing the NOx sensor requires disconnecting the battery, removing the exhaust heat shield, and unplugging the sensor's electrical connector. The sensor is then unscrewed using a 22mm wrench. Installation involves torquing the new sensor to 50 Nm (37 lb-ft) and reconnecting all components. Post-replacement, the ECU may need to be reset using a diagnostic tool.

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 M6 Emissions System Overview

Coming Soon

Detailed guide on the emissions control system, including sensor locations, functions, and diagnostic procedures.

NOx Sensor Replacement Guide

Coming Soon

Step-by-step instructions for replacing the NOx sensor in the 2012-2018 BMW M6, including torque specifications and safety precautions.

O2 Sensor Diagnostic Codes

Coming Soon

Comprehensive list of fault codes related to O2 sensors, their meanings, and troubleshooting steps.

Lambda Sensor Calibration Procedure

Coming Soon

Technical guide on calibrating lambda sensors to ensure accurate air-fuel ratio measurements.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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