Lambda Sensors / Probes

Lambda oxygen sensor. Fits Left or Right side.

Fits:
Porsche 958 Cayenne S 4.2L DIESEL 2011-18 (in front of 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Related, superseded, cross reference or alternative numbers for comparison.

PAB998262

The product you are viewing cross references to these numbers

Lambda oxygen sensor. Fits left or right side.

Fits:
Porsche 958 Cayenne S 4.2L DIESEL 2011-18 (in front of 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Related, superseded, cross reference or alternative numbers for comparison.

PAB998262

The product you are viewing cross references to these numbers

Lambda Oxygen Sensor.
Restore accurate exhaust-gas monitoring and dependable engine-management operation with this OE Match Lambda Oxygen Sensor. Designed for compatible Porsche applications, the lambda sensor measures oxygen content within the exhaust gases and supplies this information to the vehicle's engine-management and emissions-control systems.  

Fits:

Diagram Ref No 17

Also commonly known as an oxygen sensor, O2 sensor or lambda probe, this component plays an important role in monitoring combustion and exhaust conditions. Depending on its specified installation position, lambda sensor information can be used for air-fuel mixture control, emissions monitoring and/or catalytic converter supervision.

Accurate oxygen-sensor information allows the engine control unit (ECU) to recognise abnormal exhaust conditions and make or support the appropriate engine-management decisions.

Lambda sensors operate directly within the exhaust system and are continually exposed to high temperatures, vibration, moisture, combustion deposits and repeated thermal cycling. Over time, the sensing element can become contaminated or slow to respond, while the internal heater circuit, wiring and electrical connector can also deteriorate.

This OE Match Lambda Oxygen Sensor provides a high-quality replacement for a confirmed faulty, contaminated or slow-response sensor.

What This Product Does:

• Measures oxygen content within the exhaust gases.
• Sends exhaust-gas information to the ECU.
• Helps the engine-management system monitor combustion conditions.
• Supports accurate air-fuel mixture monitoring where applicable.
• Helps the ECU identify rich or lean operating conditions where applicable.
• Supports emissions-control system operation.
• Provides information used for onboard diagnostics.
• Can support catalytic converter monitoring depending on installation position.
• Helps detect abnormal exhaust-system behaviour.
• Supports efficient engine operation.
• Helps maintain controlled exhaust emissions.
• Replaces a slow, inaccurate, contaminated or failed lambda sensor.
• Provides an OE Match replacement for compatible Porsche applications.  

Symptoms Of Wear Or Failure:

• Check engine or engine-management warning light.
• Lambda or oxygen sensor fault codes.
• Rich or lean mixture fault codes.
• Emissions-system warning messages.
• Increased fuel consumption.
• Rough or unstable idle.
• Engine hesitation.
• Poor throttle response.
• Reduced engine performance.
• Engine misfires.
• Uneven engine operation.
• Increased exhaust emissions.
• Failed emissions test.
• Slow sensor response during diagnostic testing.
• Implausible oxygen sensor readings.
• Intermittent sensor signal.
• Sensor heater circuit fault.
• Open- or short-circuit faults.
• Damaged or heat-affected sensor wiring.
• Corroded or damaged electrical connector.  

Why Replacement Matters:

• Accurate lambda sensor information is important to modern engine-management and emissions-control systems.
• A lambda sensor does not necessarily fail suddenly. As it ages, its response can become progressively slower or its readings can become inaccurate. The sensor may therefore continue producing an electrical signal while no longer providing the ECU with sufficiently reliable information.
• Replacing a confirmed faulty OE Match Lambda Oxygen Sensor helps restore accurate exhaust feedback and dependable engine-management operation.

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

PAB998262

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.

Restore accurate air-fuel mixture monitoring and dependable engine-management operation with this LEFT Lambda Sensor, part number 95860613301. Designed for compatible Porsche applications, this sensor is fitted on the LEFT side BEFORE the catalytic converter, where it monitors oxygen levels in the exhaust gases leaving the engine.

Fits:

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
• Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 13

Also known as an oxygen sensor, O2 sensor or lambda probe, the pre-catalyst sensor provides the engine control unit (ECU) with important information about combustion conditions. By measuring residual oxygen in the exhaust gases, the sensor allows the ECU to determine whether the engine is operating richer or leaner than intended.

The ECU uses this feedback to make appropriate adjustments to fuel delivery. Accurate lambda control contributes to smooth engine performance, efficient fuel consumption, controlled emissions and effective catalytic converter operation.

Because the sensor operates directly in the hot exhaust stream, it is continually exposed to extreme temperatures, vibration, moisture and combustion deposits. Over time, the sensing element can become contaminated or slow to respond, while the internal heater, wiring and electrical connections may also deteriorate.

Replacing a confirmed faulty LEFT Lambda Sensor 95860613301 helps restore accurate mixture feedback and reliable engine-management operation.

What This Product Does:

• Measures oxygen content in the exhaust gases.
• Fits the LEFT-side exhaust system where specified.
• Operates BEFORE the catalytic converter.
• Sends exhaust-mixture information to the ECU.
• Helps determine whether combustion is rich or lean.
• Supports closed-loop fuel control.
• Allows the ECU to make appropriate fuel corrections.
• Helps maintain the intended air-fuel mixture.
• Supports smooth idle and consistent engine performance.
• Helps maintain responsive acceleration.
• Contributes to efficient fuel consumption.
• Helps control exhaust emissions.
• Supports effective catalytic converter operation.
• Provides information used for engine diagnostics.
• Replaces a slow, inaccurate, contaminated or failed lambda sensor.  

Symptoms Of Wear Or Failure:

• Check engine or engine-management warning light.
• Lambda or oxygen sensor fault codes.
• Left-bank oxygen sensor faults.
• Rich or lean mixture fault codes.
• Increased fuel consumption.
• Rough or unstable idle.
• Engine hesitation.
• Poor throttle response.
• Reduced engine performance.
• Uneven engine operation.
• Engine misfires.
• Difficult starting.
• Increased exhaust emissions.
• Failed emissions test.
• Strong fuel smell from the exhaust.
• Slow lambda response during diagnostic testing.
• Implausible oxygen sensor readings.
• Intermittent sensor operation.
• Oxygen sensor heater circuit fault.
• Damaged or heat-affected wiring.
• Corroded or damaged electrical connector.  

Why Replacement Matters:

• The before-catalyst lambda sensor plays an important role in maintaining the correct engine air-fuel mixture.
• Once the engine reaches the appropriate operating conditions, the ECU can use lambda feedback to continuously refine fuel delivery. The sensor needs to react accurately as engine load, speed and operating conditions change.
• A worn lambda sensor does not always stop functioning completely. Instead, it may become progressively slower or less accurate.
• Replacing a confirmed faulty LEFT Lambda Sensor 95860613301 helps restore accurate exhaust feedback and allows the ECU to manage fuelling correctly.

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

95860613301

The product you are viewing cross references to these numbers

LEFT Lambda Sensor, BEFORE Catalytic Converter.

Restore accurate air-fuel mixture monitoring and dependable engine-management operation with this OE Match LEFT Lambda Sensor. Designed for compatible Porsche applications, this sensor is fitted on the LEFT side BEFORE the catalytic converter, where it measures oxygen levels in the exhaust gases leaving the engine.

Fits:

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
• Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
• Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 13

Also known as an oxygen sensor, O2 sensor or lambda probe, the pre-catalyst lambda sensor provides the engine control unit (ECU) with essential information about combustion conditions. By measuring the amount of residual oxygen in the exhaust, it helps the ECU determine whether the engine is operating richer or leaner than intended.

The ECU can use this feedback to adjust fuel delivery, helping maintain the correct air-fuel mixture under changing engine speeds, loads and operating conditions. Accurate lambda sensor operation contributes to efficient combustion, smooth performance, controlled emissions and effective catalytic converter operation.

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

This OE Match LEFT Lambda Sensor provides a high-quality replacement for a confirmed faulty, contaminated or slow-response pre-catalyst sensor.

What This Product Does:

• Measures oxygen content in the exhaust gases.
• Fits the LEFT-side exhaust system where specified.
• Operates BEFORE the catalytic converter.
• Sends exhaust-mixture information to the ECU.
• Helps determine whether combustion is rich or lean.
• Supports closed-loop fuel control.
• Allows the ECU to make appropriate fuel corrections.
• Helps maintain the intended air-fuel mixture.
• Supports smooth idle and consistent engine performance.
• Helps maintain responsive acceleration.
• Contributes to efficient fuel consumption.
• Helps control exhaust emissions.
• Supports effective catalytic converter operation.
• Provides information used for engine diagnostics.
• Replaces a slow, inaccurate, contaminated or failed lambda sensor.  

Symptoms Of Wear Or Failure:

• Check engine or engine-management warning light.
• Lambda or oxygen sensor fault codes.
• Left-bank oxygen sensor faults.
• Rich or lean mixture fault codes.
• Increased fuel consumption.
• Rough or unstable idle.
• Engine hesitation.
• Poor throttle response.
• Reduced engine performance.
• Uneven engine operation.
• Engine misfires.
• Difficult starting.
• Increased exhaust emissions.
• Failed emissions test.
• Strong fuel smell from the exhaust.
• Slow lambda response during diagnostic testing.
• Implausible oxygen sensor readings.
• Intermittent sensor operation.
• Oxygen sensor heater circuit fault.
• Damaged or heat-affected wiring.
• Corroded or damaged electrical connector.  

Why Replacement Matters:

• The before-catalyst lambda sensor plays an important role in maintaining the correct engine air-fuel mixture.
• Once the engine reaches the appropriate operating conditions, the ECU can use lambda feedback to continuously refine fuel delivery. The sensor needs to react accurately as engine load, speed and operating conditions change.
• A worn lambda sensor does not always stop functioning completely. Instead, it may become progressively slower or less accurate.

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

95860613301

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 Oxygen Sensor, BEFORE Catalytic Converter.
Maintain accurate air-fuel mixture control and dependable engine-management performance with this Porsche Right Lambda Oxygen Sensor, part number 958906262G. Designed for compatible Porsche applications, this sensor is specified for the RIGHT side and BEFORE the catalytic converter. 

Fits: 

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17  

Diagram Ref No 18

Also known as an upstream, pre-cat or O2 sensor, the lambda sensor measures the oxygen content remaining in the exhaust gases after combustion. This information is transmitted to the engine control unit (ECU), allowing it to determine whether the engine is operating with a rich or lean air-fuel mixture and make precise adjustments to fuel delivery.

Because this sensor is located before the catalytic converter, it plays a key role in closed-loop fuel control. Accurate sensor readings help the engine-management system maintain efficient combustion, responsive performance, appropriate fuel consumption and controlled exhaust emissions.

Lambda sensors operate in extremely demanding conditions, with constant exposure to high exhaust temperatures, vibration and combustion deposits. Over time, the sensing element may become contaminated or slow to respond, while the internal heater circuit, wiring or connector can also deteriorate.

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

What This Product Does:

• Is designed for the RIGHT-side application.
• Is positioned BEFORE the catalytic converter.
• Measures oxygen levels within the exhaust gases.
• Sends exhaust oxygen information to the ECU.
• Helps determine whether the air-fuel mixture is rich or lean.
• Allows the ECU to make continuous fuel-delivery corrections.
• Supports accurate closed-loop mixture control.
• Helps maintain efficient combustion.
• Supports smooth throttle response and engine performance.
• Helps optimise fuel consumption.
• Contributes to correct exhaust emissions.
• Helps protect the catalytic converter from problems caused by incorrect fuelling.
• Replaces a worn, contaminated, damaged or failed lambda sensor.  

Symptoms Of Wear Or Failure:

• Check engine or engine-management warning light.
• Lambda or oxygen sensor-related diagnostic fault codes.
• Bank-specific 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 sensor wiring or electrical connectors.  

Why Replacement Matters:

• The lambda sensor located before the catalytic converter provides important feedback that allows the ECU to continually fine-tune the engine's air-fuel mixture.
• A healthy sensor responds quickly to changing exhaust oxygen levels. As the sensor ages or becomes contaminated, its response may become slower or inaccurate. This can interfere with the ECU's ability to make precise fuel corrections.
• Poor mixture control may result in increased fuel consumption, reduced performance, unstable running and higher exhaust emissions.
• Incorrect fuelling can also affect catalytic converter life. If the engine operates excessively rich, unburned fuel can enter the exhaust system and cause the catalytic converter to operate at unusually high temperatures. Persistent problems may contribute to premature catalyst deterioration.
• A failed sensor can also cause the ECU to use substitute values or a fallback operating strategy. Although the engine may remain driveable, efficiency, emissions and performance can be compromised.
• Because 958906262G is specified for the right-side pre-catalytic converter position, correct sensor identification is particularly important when servicing engines with multiple exhaust banks and oxygen sensors.
• Replacing a defective sensor with the correct Porsche Right Lambda Oxygen Sensor 958906262G helps restore accurate mixture feedback, efficient combustion and dependable engine-management performance.

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

958906262G

The product you are viewing cross references to these numbers

RIGHT Lambda Oxygen Sensor, BEFORE Catalytic Converter.

Restore accurate fuel-mixture monitoring and dependable engine-management performance with this OE Match Right Lambda Oxygen Sensor. Designed for compatible Porsche applications, this sensor is specified for the RIGHT side, BEFORE the catalytic converter.

Fits: 

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17  

Diagram Ref No 18

Also known as an upstream, pre-cat or O2 sensor, the lambda sensor measures the oxygen content remaining in the exhaust gases after combustion. This information is sent to the engine control unit (ECU), allowing it to determine whether the engine is operating with a rich or lean air-fuel mixture and make precise adjustments to fuel delivery.

Because this sensor operates before the catalytic converter, it plays an important role in closed-loop fuel control. Accurate readings help maintain efficient combustion, responsive engine performance, appropriate fuel consumption and controlled exhaust emissions.

Lambda sensors operate in a particularly demanding environment, exposed to extreme 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 connector can also deteriorate.

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

What This Product Does:

• Is designed for the RIGHT-side application.
• Is positioned BEFORE the catalytic converter.
• Measures oxygen content in the exhaust gases.
• Sends exhaust oxygen information to the ECU.
• Helps determine whether the air-fuel mixture is rich or lean.
• Allows the ECU to make continuous fuel-delivery corrections.
• Supports accurate closed-loop mixture control.
• Helps maintain efficient combustion.
• Supports smooth throttle response and engine performance.
• Helps optimise fuel consumption.
• Contributes to correct exhaust emissions.
• Helps protect the catalytic converter from problems associated with incorrect fuelling.
• Replaces a slow, contaminated, damaged or failed lambda 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.
• Bank-specific 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 pre-catalytic converter lambda sensor provides essential feedback for controlling the engine's air-fuel mixture. The ECU relies on this information to make continual fuel-delivery adjustments as engine speed, load and operating conditions change.
• As a lambda sensor ages, its response may become progressively slower or less accurate without immediately failing completely. This can result in less precise mixture control and contribute to increased fuel consumption, reduced performance, unstable running and higher emissions.
• Incorrect fuelling can also affect the catalytic converter. An excessively rich mixture may allow unburned fuel to enter the exhaust system, increasing catalyst temperatures and potentially shortening catalytic converter life.
• A completely failed sensor may cause the ECU to substitute calculated values or adopt a fallback operating strategy. The engine may remain driveable, but efficiency, emissions and performance can be compromised.
• Because it is specified for the right-side, pre-catalytic converter position, correct sensor location is particularly important on engines equipped with multiple exhaust banks and lambda sensors.
• Replacing a defective sensor with this OE Match Right Lambda Oxygen Sensor helps restore accurate mixture feedback, efficient combustion and dependable engine-management performance.

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

958906262G

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