NOx-Sensor Genuine Porsche part 95860680751

NOx Sensor.
The NOx Sensor is a genuine emissions-control component designed to monitor nitrogen oxide (NOₓ) levels in the vehicle’s exhaust system. Installed within the exhaust stream, this sensor provides real-time data to the Engine Control Unit (ECU) to regulate combustion and after-treatment systems such as catalytic converters or SCR/AdBlue systems.

Fits:

• Porsche 958 Cayenne V6 3.0L Diesel 245HP 2012-18

Cars With Engine Codes:
CNRB

Diagram Ref No 17

What This Product Does:

• The NOx sensor continuously monitors levels of nitrogen oxides in your exhaust gases. This data is sent to the Engine Control Unit (ECU) or the vehicle’s emissions-control module.
• Based on NOx levels, the ECU (or emissions system) adjusts engine parameters (air-fuel ratio, exhaust after-treatment, DEF/AdBlue dosing in diesel/SCR systems, etc.) to ensure emissions stay within legal/environmental limits.
• Helps ensure compliance with environmental regulations and reduces harmful exhaust emissions — particularly NO and NO₂, which contribute to smog, acid rain, and health hazards.
• Supports proper functioning of components like catalytic converters or SCR (Selective Catalytic Reduction) systems by ensuring they receive accurate feedback for NOx removal. 

Symptoms Of Failure:

• Engine warning light / emissions fault appears on the dashboard — the ECU detects abnormal or missing NOx sensor signals.
  
• Reduced engine performance or “limp mode” — the ECU may limit engine output, or injection logic may suffer, leading to poor acceleration or unstable performance.
  
• Increased fuel consumption or poor fuel economy — incorrect NOx data can cause the engine management system to mis-manage the air/fuel mixture.
  
• Rough idle, misfires, or jerky acceleration — combustion may become uneven if exhaust feedback is wrong, especially under load or varying throttle.
  
• Failed emissions or inspection test, or excessive exhaust pollution — without a working NOx sensor, the emissions-control system can’t properly regulate NOx output.
  
• Potential damage to exhaust-aftertreatment components (e.g. catalytic converter or SCR system) — inaccurate NOx readings can lead to improper dosing or treatment, shortening component life.
  
  

Why Replacement Matters:

• Compliance with Emissions Regulations: For modern diesel (and many petrol) vehicles, a working NOx sensor is often required to meet compliance standards. Without it, you may fail emissions tests.
  
• Protects Engine Performance & Efficiency: A proper NOx sensor ensures the ECU has accurate exhaust feedback — leading to correct combustion, fuel economy, and stable power delivery.
  
• Prevents Further Damage: Faulty NOx readings can lead to improper exhaust after-treatment (e.g. over- or under-dosing AdBlue or mismanaging catalytic converter operation), which can damage costly components downstream.
  
• Environmental Responsibility: The sensor helps ensure harmful nitrogen oxides aren’t released in harmful quantities, reducing environmental harm and air-quality impact.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

958907807D

The product you are viewing cross references to these numbers

NOx Sensor.
The NOx Sensor is a emissions-control component designed to monitor nitrogen oxide (NOₓ) levels in the vehicle’s exhaust system. Installed within the exhaust stream, this sensor provides real-time data to the Engine Control Unit (ECU) to regulate combustion and after-treatment systems such as catalytic converters or SCR/AdBlue systems.

Fits:

• Porsche 958 Cayenne V6 3.0L Diesel 245HP 2012-18

Cars With Engine Codes:
CNRB

Diagram Ref No 17

What This Product Does:

• The NOx sensor continuously monitors levels of nitrogen oxides in your exhaust gases. This data is sent to the Engine Control Unit (ECU) or the vehicle’s emissions-control module.
• Based on NOx levels, the ECU (or emissions system) adjusts engine parameters (air-fuel ratio, exhaust after-treatment, DEF/AdBlue dosing in diesel/SCR systems, etc.) to ensure emissions stay within legal/environmental limits.
• Helps ensure compliance with environmental regulations and reduces harmful exhaust emissions — particularly NO and NO₂, which contribute to smog, acid rain, and health hazards.
• Supports proper functioning of components like catalytic converters or SCR (Selective Catalytic Reduction) systems by ensuring they receive accurate feedback for NOx removal. 

Symptoms Of Failure:

• Engine warning light / emissions fault appears on the dashboard — the ECU detects abnormal or missing NOx sensor signals.
  
• Reduced engine performance or “limp mode” — the ECU may limit engine output, or injection logic may suffer, leading to poor acceleration or unstable performance.
  
• Increased fuel consumption or poor fuel economy — incorrect NOx data can cause the engine management system to mis-manage the air/fuel mixture.
  
• Rough idle, misfires, or jerky acceleration — combustion may become uneven if exhaust feedback is wrong, especially under load or varying throttle.
  
• Failed emissions or inspection test, or excessive exhaust pollution — without a working NOx sensor, the emissions-control system can’t properly regulate NOx output.
  
• Potential damage to exhaust-aftertreatment components (e.g. catalytic converter or SCR system) — inaccurate NOx readings can lead to improper dosing or treatment, shortening component life.
  
  

Why Replacement Matters:

• Compliance with Emissions Regulations: For modern diesel (and many petrol) vehicles, a working NOx sensor is often required to meet compliance standards. Without it, you may fail emissions tests.
  
• Protects Engine Performance & Efficiency: A proper NOx sensor ensures the ECU has accurate exhaust feedback — leading to correct combustion, fuel economy, and stable power delivery.
  
• Prevents Further Damage: Faulty NOx readings can lead to improper exhaust after-treatment (e.g. over- or under-dosing AdBlue or mismanaging catalytic converter operation), which can damage costly components downstream.
  
• Environmental Responsibility: The sensor helps ensure harmful nitrogen oxides aren’t released in harmful quantities, reducing environmental harm and air-quality impact.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

958907807D

The product you are viewing cross references to these numbers

NOx Sensor.
The NOx Sensor is a genuine OEM-spec nitrogen oxide sensor designed to measure NOx levels in the exhaust system of modern Porsche vehicles. Mounted directly in the exhaust flow, this sensor provides the Engine Control Unit (ECU) with real-time nitrogen-oxide concentration data, allowing the emissions-control system to accurately regulate combustion and after-treatment.

Fits:

• Porsche 958 Cayenne V6 3.0L Diesel 245HP 2012-18

Cars With Engine Codes:
CVVA / CVVB / CVVC

Diagram Ref No 17

What This Product Does:

• Monitors NOₓ emissions — it continuously measures nitrogen-oxide levels in the exhaust gas and communicates that data to the vehicle’s control unit (ECU).
• Enables emissions control systems — in diesel engines (or gasoline engines with NOₓ after-treatment), the sensor provides feedback for systems such as Selective Catalytic Reduction (SCR) or Exhaust Gas Recirculation (EGR), to reduce NOₓ output before gas exits the tailpipe.
  
• Helps regulate combustion and fuel dosing — by providing real-time exhaust composition data, the ECU can adjust parameters such as fuel injection timing, air/fuel ratio or SCR dosing (e.g. AdBlue injection) to optimise performance and emissions compliance.
  
• Ensures emissions compliance — given tightening environmental laws and standards (e.g. Euro 6 in Europe), a functioning NOx sensor is essential to keep NOₓ emissions within legal limits.
  
  

Symptoms Of Failure:

• “Check Engine” or emissions-system warning light appears on the dashboard.
  
• Reduced engine performance or the vehicle entering “limp mode” — some ECUs restrict engine output when exhaust-sensor data is invalid.
  
• Increased fuel consumption or poor fuel economy — incorrect NOₓ data can lead the ECU to mismanage combustion parameters.
  
• Rough idle, hesitation or unstable engine behaviour, especially under acceleration or load — as exhaust-gas composition readings become unreliable.
  
• Failed emissions test or legal compliance check — the car may fail inspection if NOₓ emissions exceed permitted levels due to faulty sensing/control.
  
• R / AdBlue warnings (on diesel/SCR systems) — because the ECU can’t reliably monitor NOₓ output.
  
  

Why Replacement Matters:

• Maintains emissions compliance — ensures that NOₓ output remains within legal limits under environmental regulations.
  
• Preserves engine performance & efficiency — accurate NOₓ feedback enables proper combustion control, fuel efficiency, and normal throttle response.
  
• Protects exhaust after-treatment hardware — catalytic converters, SCR catalysts, and associated systems depend on accurate NOₓ sensing; a faulty sensor can lead to improper dosing or damage.
  
• Avoids costly repairs or legal penalties — driving with a failed NOx sensor may lead to emissions-test failure or more extensive emissions-system damage.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAB907807G

The product you are viewing cross references to these numbers

NOx Sensor.
The NOx Sensor is a nitrogen oxide sensor designed to measure NOx levels in the exhaust system of modern Porsche vehicles. Mounted directly in the exhaust flow, this sensor provides the Engine Control Unit (ECU) with real-time nitrogen-oxide concentration data, allowing the emissions-control system to accurately regulate combustion and after-treatment.

Fits:

• Porsche 958 Cayenne V6 3.0L Diesel 245HP 2012-18

Cars With Engine Codes:
CVVA / CVVB / CVVC

Diagram Ref No 17

What This Product Does:

• Monitors NOₓ emissions — it continuously measures nitrogen-oxide levels in the exhaust gas and communicates that data to the vehicle’s control unit (ECU).
• Enables emissions control systems — in diesel engines (or gasoline engines with NOₓ after-treatment), the sensor provides feedback for systems such as Selective Catalytic Reduction (SCR) or Exhaust Gas Recirculation (EGR), to reduce NOₓ output before gas exits the tailpipe.
  
• Helps regulate combustion and fuel dosing — by providing real-time exhaust composition data, the ECU can adjust parameters such as fuel injection timing, air/fuel ratio or SCR dosing (e.g. AdBlue injection) to optimise performance and emissions compliance.
  
• Ensures emissions compliance — given tightening environmental laws and standards (e.g. Euro 6 in Europe), a functioning NOx sensor is essential to keep NOₓ emissions within legal limits.
  
  

Symptoms Of Failure:

• “Check Engine” or emissions-system warning light appears on the dashboard.
  
• Reduced engine performance or the vehicle entering “limp mode” — some ECUs restrict engine output when exhaust-sensor data is invalid.
  
• Increased fuel consumption or poor fuel economy — incorrect NOₓ data can lead the ECU to mismanage combustion parameters.
  
• Rough idle, hesitation or unstable engine behaviour, especially under acceleration or load — as exhaust-gas composition readings become unreliable.
  
• Failed emissions test or legal compliance check — the car may fail inspection if NOₓ emissions exceed permitted levels due to faulty sensing/control.
  
• R / AdBlue warnings (on diesel/SCR systems) — because the ECU can’t reliably monitor NOₓ output.
  
  

Why Replacement Matters:

• Maintains emissions compliance — ensures that NOₓ output remains within legal limits under environmental regulations.
  
• Preserves engine performance & efficiency — accurate NOₓ feedback enables proper combustion control, fuel efficiency, and normal throttle response.
  
• Protects exhaust after-treatment hardware — catalytic converters, SCR catalysts, and associated systems depend on accurate NOₓ sensing; a faulty sensor can lead to improper dosing or damage.
  
• Avoids costly repairs or legal penalties — driving with a failed NOx sensor may lead to emissions-test failure or more extensive emissions-system damage.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAB907807G

The product you are viewing cross references to these numbers