Lambda Sensors / Probes

Lambda oxygen sensor

Fits:
Porsche 958 Cayenne 8cyl. 4.8L 2011-17 (AFTER catalytic converter)
Porsche 958 Cayenne Turbo 8cyl. 4.8L 2011-17 (AFTER catalytic converter)


Function:
The Oxygen Sensor (also known as Lambda Sensor) is located in the exhaust manifold and measures the amount of unburned oxygen in your engine's exhaust. Based on the amount of oxygen, it sends a signal to your engine computer which then adjusts the air/fuel mixture for optimum engine performance and emission control.

Failure Symptoms:
• Excessive fuel consumption, a faulty oxygen sensor can waste 30% of your fuel.
• Driveability problems, such as engine surging or hesitation.
• High hydrocarbon emissions, failing an emissions inspection.
• The engine warning light may be on or service flag displayed.
• The ecu/computer stores a mixture-related fault code.
• When the oxygen sensor has stopped functioning completely, the catalytic converter may overheat and fail

Maintenance / Service:
• Test and/or replace every 30,000 miles.
• Perform periodic emission checks.
• Watch for service light.
• Vehicle manufacturers recommend periodic inspection and replacement of oxygen sensor.

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Related, superseded, cross reference or alternative numbers for comparison.

95860617201

The product you are viewing cross references to these numbers

Lambda oxygen sensor

Fits:
Porsche 958 Cayenne 8cyl. 4.8L 2011-17 (AFTER catalytic converter)
Porsche 958 Cayenne Turbo 8cyl. 4.8L 2011-17 (AFTER catalytic converter)


Function:
The Oxygen Sensor (also known as Lambda Sensor) is located in the exhaust manifold and measures the amount of unburned oxygen in your engine's exhaust. Based on the amount of oxygen, it sends a signal to your engine computer which then adjusts the air/fuel mixture for optimum engine performance and emission control.

Failure Symptoms:
• Excessive fuel consumption, a faulty oxygen sensor can waste 30% of your fuel.
• Driveability problems, such as engine surging or hesitation.
• High hydrocarbon emissions, failing an emissions inspection.
• The engine warning light may be on or service flag displayed.
• The ecu/computer stores a mixture-related fault code.
• When the oxygen sensor has stopped functioning completely, the catalytic converter may overheat and fail

Maintenance / Service:
• Test and/or replace every 30,000 miles.
• Perform periodic emission checks.
• Watch for service light.
• Vehicle manufacturers recommend periodic inspection and replacement of oxygen sensor.

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

95860617201

The product you are viewing cross references to these numbers

Lambda Oxygen Sensor, BEFORE Catalytic Converter.
Maintain accurate air-fuel mixture control, efficient combustion and dependable engine-management performance with this Porsche Lambda Oxygen Sensor, part number 958906262F. Designed for compatible Porsche applications, this sensor is positioned before the catalytic converter, where it monitors oxygen levels in the exhaust gases leaving the engine.  

Fits:

• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17  

Diagram Ref No 7

Also referred to as a pre-cat, upstream or O2 sensor, the lambda sensor provides essential feedback to the engine control unit (ECU). By measuring residual oxygen in the exhaust gases, it allows the ECU to determine whether the engine is operating with a rich or lean mixture and adjust fuel delivery accordingly.

Because this sensor operates upstream of the catalytic converter, it has an important role in closed-loop fuel control. Accurate lambda readings help maintain the intended balance between engine performance, fuel economy and exhaust emissions while also helping protect the catalytic converter from the effects of incorrect fuelling.

Lambda sensors operate in an extremely demanding environment, continually exposed to high exhaust temperatures, vibration and combustion deposits. Over time, the sensing element can become contaminated or slow to respond, while the heater circuit, wiring or electrical connections may also deteriorate.

Replacing a faulty sensor with the correct Porsche Lambda Oxygen Sensor 958906262F helps restore accurate exhaust monitoring and proper engine-management operation.

What This Product Does:

• Measures oxygen content within the exhaust gases.
• Is designed for installation before the catalytic converter.
• Sends exhaust oxygen information to the ECU.
• Helps determine whether the engine is running rich or lean.
• Allows the ECU to make precise fuel-delivery corrections.
• Supports closed-loop air-fuel mixture control.
• Helps maintain efficient combustion.
• Supports smooth and responsive engine performance.
• Helps optimise fuel consumption.
• Contributes to correct exhaust emissions.
• Helps protect the catalytic converter from problems associated with incorrect fuelling.
• Provides the correct replacement for a worn, contaminated or failed sensor.  

Symptoms Of Wear Or Failure:

• Check engine or engine-management warning light.
• Lambda or oxygen sensor-related diagnostic fault codes.
• Rich or lean mixture fault codes.
• Increased fuel consumption.
• Rough or unstable idle.
• Hesitation during acceleration.
• Poor throttle response.
• Reduced engine performance.
• Engine running excessively rich or lean.
• Strong fuel smell from the exhaust.
• Increased exhaust emissions.
• Failed emissions testing where applicable.
• Intermittent engine-management warnings.
• Slow sensor response during diagnostic testing.
• Implausible or inconsistent lambda readings.
• Oxygen sensor heater circuit faults.
• Damaged wiring, insulation or electrical connectors.  

Why Replacement Matters:

• The lambda sensor positioned before the catalytic converter provides the ECU with important information for controlling the engine's air-fuel mixture.
• A healthy sensor reacts rapidly to changes in exhaust oxygen content, allowing the ECU to continually fine-tune fuel delivery. As a sensor ages, its response can become slower or less accurate even before complete failure occurs.
• Poor lambda feedback can result in higher fuel consumption, reduced performance, unstable running and increased emissions. The engine-management warning light may also illuminate when sensor readings move outside the expected range.
• Incorrect fuelling can have consequences beyond engine performance. An excessively rich mixture can allow unburned fuel to enter the exhaust system, potentially increasing catalytic converter temperatures and contributing to premature catalyst deterioration.
• A completely failed sensor may cause the ECU to substitute calculated values or adopt a fallback operating strategy. The engine may continue to run, but efficiency, emissions and performance can be compromised.
• Replacing a faulty unit with the correct Porsche Lambda Oxygen Sensor 958906262F helps restore accurate mixture feedback, efficient combustion and dependable engine-management performance.

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

958906262F

The product you are viewing cross references to these numbers

Lambda Oxygen Sensor, BEFORE Catalytic Converter.
Restore accurate air-fuel mixture monitoring and dependable engine-management performance with this OE Match Lambda Oxygen Sensor. Designed for compatible Porsche applications, this sensor is positioned before the catalytic converter, where it measures oxygen levels in the exhaust gases immediately after combustion.  

Fits:

• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17  

Diagram Ref No 7

Also known as an upstream, pre-cat or O2 sensor, the lambda sensor provides essential feedback to the engine control unit (ECU). By measuring residual oxygen in the exhaust stream, it enables the ECU to determine whether the engine is operating with a rich or lean air-fuel mixture and make continuous corrections to fuel delivery.

As a pre-catalytic converter sensor, it has an important role in closed-loop fuel control. Accurate readings help maintain efficient combustion, responsive performance, appropriate fuel consumption and controlled exhaust emissions.

Lambda sensors operate under demanding conditions and are continually exposed to extreme exhaust temperatures, vibration and combustion deposits. With age, the sensing element can become contaminated or slow to respond, while the internal heater, wiring or electrical connections may also deteriorate.

This OE Match Lambda Oxygen Sensor provides a high-quality replacement for a slow, contaminated, damaged or failed original sensor.

What This Product Does:

• Measures oxygen content within the exhaust gases.
• Is designed for installation before the catalytic converter.
• Sends exhaust oxygen information to the ECU.
• Helps determine whether the engine is running rich or lean.
• Allows the ECU to make accurate fuel-delivery adjustments.
• Supports closed-loop air-fuel mixture control.
• Helps maintain efficient combustion.
• Contributes to smooth and responsive engine performance.
• Helps optimise fuel consumption.
• Supports correct exhaust emissions.
• Helps protect the catalytic converter from problems caused by incorrect fuelling.
• Replaces a worn, contaminated or failed oxygen sensor.
• Provides an OE Match alternative for compatible Porsche applications.  

Symptoms Of Wear Or Failure:

• Check engine or engine-management warning light.
• Lambda or oxygen sensor-related diagnostic fault codes.
• Rich or lean mixture fault codes.
• Increased fuel consumption.
• Rough or unstable idle.
• Hesitation during acceleration.
• Poor throttle response.
• Reduced engine performance.
• Engine running excessively rich or lean.
• Strong fuel smell from the exhaust.
• Increased exhaust emissions.
• Failed emissions testing where applicable.
• Intermittent engine-management warnings.
• Slow sensor response shown by diagnostic equipment.
• Implausible or inconsistent lambda readings.
• Oxygen sensor heater circuit faults.
• Damaged wiring, insulation or electrical connectors.  

Why Replacement Matters:

• The lambda sensor positioned before the catalytic converter is a key feedback component within the engine-management system. The ECU relies on its signal to continually fine-tune the amount of fuel delivered to the engine.
• As a lambda sensor ages, it may become slower to react to changes in exhaust oxygen content. A sensor does not necessarily have to fail completely to affect engine operation; delayed or inaccurate readings can result in less precise fuel corrections.
• Poor mixture control can contribute to increased fuel consumption, reduced performance, unstable running and higher exhaust emissions.
• Incorrect fuelling can also place additional stress on the catalytic converter. If the engine runs excessively rich, unburned fuel can enter the exhaust system and increase catalyst temperatures, potentially shortening catalytic converter service life.
• A failed sensor may cause the ECU to use substitute values or adopt a fallback strategy. Although the engine may continue to run, fuel efficiency, emissions and performance may be compromised.
• Replacing a defective sensor with this OE Match Lambda Oxygen Sensor helps restore accurate mixture feedback, efficient combustion and dependable engine-management operation.

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

958906262F

The product you are viewing cross references to these numbers

Lambda Sensor, BEFORE Catalytic Converter.

The Lambda Sensor, Before Catalytic Converter is a precision-engineered engine management and emissions control sensor designed to monitor oxygen levels in the exhaust gases before they enter the catalytic converter on the left-hand exhaust bank. Also known as an upstream oxygen sensor or pre-catalyst lambda sensor, it plays a crucial role in maintaining the correct air-fuel mixture for efficient combustion and optimal engine performance.

Fits:

• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17

  
Diagram Ref No 7

The sensor continuously measures the oxygen content in the exhaust stream and sends real-time data to the engine control unit (ECU). Using this information, the ECU adjusts fuel injection and ignition parameters to maximise fuel efficiency, reduce emissions, and ensure smooth engine operation. Manufactured to OEM specifications, this sensor delivers accurate readings, fast response times, and long-term reliability.

What This Product Does:

• Monitors oxygen levels in exhaust gases before the catalytic converter
• Provides real-time feedback to the engine control unit (ECU)
• Helps regulate the air-fuel mixture for efficient combustion
• Supports engine performance and throttle response
• Improves fuel economy and emissions control
• Ensures efficient catalytic converter operation

Symptoms Of Wear Or Failure:

• Check engine light illumination
• Poor fuel economy
• Rough idle or unstable engine operation
• Reduced engine power and acceleration
• Engine hesitation or sluggish throttle response
• Increased exhaust emissions
• Failed emissions or MOT tests
• Oxygen sensor-related fault codes stored in the ECU

Why Replacement Matters:

• Restores accurate air-fuel ratio monitoring
• Improves fuel economy and combustion efficiency
• Enhances engine performance and throttle response
• Reduces harmful exhaust emissions
• Supports proper catalytic converter function and longevity
• Prevents unnecessary engine management warning lights
• Helps maintain emissions compliance and MOT readiness
• Ensures reliable communication between the sensor and ECU for optimum engine operation

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

94860613

The product you are viewing cross references to these numbers

LEFT Lambda Sensor, BEFORE Catalytic Converter.

The BOSCH LEFT Lambda Sensor, Before Catalytic Converter is a precision-engineered engine management and emissions control sensor designed to monitor oxygen levels in the exhaust gases before they enter the catalytic converter on the left-hand exhaust bank. Also known as an upstream oxygen sensor or pre-catalyst lambda sensor, it plays a crucial role in maintaining the correct air-fuel mixture for efficient combustion and optimal engine performance.

Fits:

• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17

  
Diagram Ref No 7

The BOSCH sensor continuously measures the oxygen content in the exhaust stream and sends real-time data to the engine control unit (ECU). Using this information, the ECU adjusts fuel injection and ignition parameters to maximise fuel efficiency, reduce emissions, and ensure smooth engine operation. This sensor delivers accurate readings, fast response times, and long-term reliability.

What This Product Does:

• Monitors oxygen levels in exhaust gases before the catalytic converter
• Provides real-time feedback to the engine control unit (ECU)
• Helps regulate the air-fuel mixture for efficient combustion
• Supports engine performance and throttle response
• Improves fuel economy and emissions control
• Ensures efficient catalytic converter operation

Symptoms Of Wear Or Failure:

• Check engine light illumination
• Poor fuel economy
• Rough idle or unstable engine operation
• Reduced engine power and acceleration
• Engine hesitation or sluggish throttle response
• Increased exhaust emissions
• Failed emissions or MOT tests
• Oxygen sensor-related fault codes stored in the ECU

Why Replacement Matters:

• Restores accurate air-fuel ratio monitoring
• Improves fuel economy and combustion efficiency
• Enhances engine performance and throttle response
• Reduces harmful exhaust emissions
• Supports proper catalytic converter function and longevity
• Prevents unnecessary engine management warning lights
• Helps maintain emissions compliance and MOT readiness
• Ensures reliable communication between the sensor and ECU for optimum engine operation

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

94860613302

The product you are viewing cross references to these numbers

LEFT Lambda Sensor, BEFORE Catalytic Converter.

The OE MATCH LEFT Lambda Sensor, Before Catalytic Converter is a precision-engineered engine management and emissions control sensor designed to monitor oxygen levels in the exhaust gases before they enter the catalytic converter on the left-hand exhaust bank. Also known as an upstream oxygen sensor or pre-catalyst lambda sensor, it plays a crucial role in maintaining the correct air-fuel mixture for efficient combustion and optimal engine performance.

Fits:

• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17

  
Diagram Ref No 7

The OE MATCH sensor continuously measures the oxygen content in the exhaust stream and sends real-time data to the engine control unit (ECU). Using this information, the ECU adjusts fuel injection and ignition parameters to maximise fuel efficiency, reduce emissions, and ensure smooth engine operation. This sensor delivers accurate readings, fast response times, and long-term reliability.

What This Product Does:

• Monitors oxygen levels in exhaust gases before the catalytic converter
• Provides real-time feedback to the engine control unit (ECU)
• Helps regulate the air-fuel mixture for efficient combustion
• Supports engine performance and throttle response
• Improves fuel economy and emissions control
• Ensures efficient catalytic converter operation

Symptoms Of Wear Or Failure:

• Check engine light illumination
• Poor fuel economy
• Rough idle or unstable engine operation
• Reduced engine power and acceleration
• Engine hesitation or sluggish throttle response
• Increased exhaust emissions
• Failed emissions or MOT tests
• Oxygen sensor-related fault codes stored in the ECU

Why Replacement Matters:

• Restores accurate air-fuel ratio monitoring
• Improves fuel economy and combustion efficiency
• Enhances engine performance and throttle response
• Reduces harmful exhaust emissions
• Supports proper catalytic converter function and longevity
• Prevents unnecessary engine management warning lights
• Helps maintain emissions compliance and MOT readiness
• Ensures reliable communication between the sensor and ECU for optimum engine operation

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

94860613302

The product you are viewing cross references to these numbers

Plastic support for oxygen sensor / lambda probe. 

Sold individually; x2 per vehicle. 

Fits:
Porsche 957 Cayenne S 4.8L V8 2007-10
Porsche 957 Cayenne GTS 4.8L V8 2007-10

Porsche 958-1 Cayenne S 4.8L V8 2011-14
Porsche 958-1 Cayenne GTS 4.8L V8 2011-14
Porsche 958-1 Cayenne Turbo / S 4.8L V8 2011-14
Porsche 958-1 Cayenne Diesel 3.0L V6 2011-14

Porsche 958-2 Cayenne Turbo 4.8L V8 2011-18
Porsche 958-2 Cayenne Diesel 3.0L V6 2011-18

Diagram ref. 26.

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

95560611420

The product you are viewing cross references to these numbers

RIGHT Lambda Sensor, BEFORE Catalytic Converter.
The OE MATCH RIGHT Lambda Sensor, Before Catalytic Converter is a precision-engineered engine management and emissions control sensor designed to monitor oxygen levels in the exhaust gases before they enter the catalytic converter on the left-hand exhaust bank. Also known as an upstream oxygen sensor or pre-catalyst lambda sensor, it plays a crucial role in maintaining the correct air-fuel mixture for efficient combustion and optimal engine performance.

Fits:

• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17

  
Diagram Ref No 7

The sensor continuously measures the oxygen content in the exhaust stream and sends real-time data to the engine control unit (ECU). Using this information, the ECU adjusts fuel injection and ignition parameters to maximise fuel efficiency, reduce emissions, and ensure smooth engine operation. This sensor delivers accurate readings, fast response times, and long-term reliability.

What This Product Does:

• Monitors oxygen levels in exhaust gases before the catalytic converter
• Provides real-time feedback to the engine control unit (ECU)
• Helps regulate the air-fuel mixture for efficient combustion
• Supports engine performance and throttle response
• Improves fuel economy and emissions control
• Ensures efficient catalytic converter operation

Symptoms Of Wear Or Failure:

• Check engine light illumination
• Poor fuel economy
• Rough idle or unstable engine operation
• Reduced engine power and acceleration
• Engine hesitation or sluggish throttle response
• Increased exhaust emissions
• Failed emissions or MOT tests
• Oxygen sensor-related fault codes stored in the ECU

Why Replacement Matters:

• Restores accurate air-fuel ratio monitoring
• Improves fuel economy and combustion efficiency
• Enhances engine performance and throttle response
• Reduces harmful exhaust emissions
• Supports proper catalytic converter function and longevity
• Prevents unnecessary engine management warning lights
• Helps maintain emissions compliance and MOT readiness
• Ensures reliable communication between the sensor and ECU for optimum engine operation

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

94860613401

The product you are viewing cross references to these numbers