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- Porsche 955 Cayenne 3.2L V6 2003-06
Restore accurate air-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 955 Cayenne 3.2L V6 2004-06
Diagram Ref No 26
Also known as an upstream, pre-cat or O2 sensor, the lambda sensor measures the oxygen content remaining in the exhaust gases immediately after combustion. It sends this information to the engine control unit (ECU), allowing the ECU to determine whether the engine is operating with a rich or lean air-fuel mixture and adjust fuel delivery accordingly.
Because this sensor is located before the catalyst, 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 an extremely demanding environment and are continually exposed to high exhaust temperatures, vibration and combustion deposits. With age, the sensing element may become contaminated or slow to respond, while the internal heater circuit, wiring or 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 specified 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 engine is running rich or lean.
- Allows continuous adjustment of fuel delivery.
- Supports accurate closed-loop mixture control.
- Helps maintain efficient combustion.
- Supports responsive acceleration and smooth engine operation.
- 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 oxygen sensor.
- Provides an OE Match alternative for compatible Porsche applications.
- Check engine or engine-management warning light.
- Lambda or oxygen sensor-related diagnostic codes.
- Bank-specific rich or lean mixture faults.
- 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 is a key feedback component within the engine-management system. The ECU relies on its signal to make continual adjustments to fuel delivery as engine speed, load and operating conditions change.
- As a lambda sensor deteriorates, it can become slower or less accurate without immediately failing completely. This may result in less precise mixture control and contribute to higher fuel consumption, reduced performance, unstable running and increased emissions.
- Incorrect fuelling can also affect the catalytic converter. An excessively rich mixture may allow unburned fuel to enter the exhaust system, potentially increasing catalyst temperatures and accelerating deterioration.
- If the sensor fails completely, the ECU may substitute calculated values or adopt a fallback strategy. The vehicle may remain driveable, but performance, fuel economy and emissions can be compromised.
- Because this sensor is specified for the right-side pre-catalyst position, correct identification is especially important on engines equipped with multiple exhaust banks and lambda sensors.
- Replacing a defective component 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.
958906262B
The product you are viewing cross references to these numbers
.jpg?width=197 "Lambda Oxygen Sensor, AFTER Catalytic Converter. Porsche 971.1 Panamera 2017-20 - 9A790626550")
.jpg){kind=link}
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
Restore accurate exhaust-gas monitoring and dependable emissions-system operation with this Porsche Lambda Oxygen Sensor. Designed for compatible Porsche applications, this sensor is positioned AFTER the catalytic converter, where it monitors the oxygen content of exhaust gases after they have passed through the catalyst.
Fits:
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-19
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-18
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-18
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-18
Diagram Ref No 18
Also known as an oxygen sensor, O2 sensor or lambda probe, the downstream sensor provides the engine control unit (ECU) with information that helps assess catalytic converter operation and overall emissions-system performance.
The ECU can compare readings from oxygen sensors positioned before and after the catalytic converter. A correctly functioning catalyst changes the characteristics of the exhaust gases passing through it, and the downstream sensor allows the vehicle to monitor whether this process is occurring as expected.
Lambda sensors operate in an extremely demanding environment, exposed to high exhaust temperatures, vibration, moisture, combustion deposits and repeated thermal cycling. Over time, the sensing element, internal heater, wiring or electrical connections can deteriorate.
Replacing a confirmed faulty sensor with the correct Porsche Lambda Oxygen Sensor 9A790626550 helps restore reliable downstream exhaust monitoring and accurate catalytic converter diagnostics.
What This Product Does:
- Measures oxygen content in the exhaust gases.
- Operates AFTER the catalytic converter.
- Sends exhaust oxygen information to the ECU.
- Helps monitor catalytic converter performance.
- Allows comparison with upstream lambda sensor readings.
- Supports emissions-system diagnostics.
- Helps detect abnormal catalytic converter behaviour.
- Provides feedback on downstream exhaust conditions.
- Supports reliable engine-management monitoring.
- Helps identify emissions-system faults.
- Works with the vehicle's wider exhaust and emissions-control system.
- Replaces a slow, contaminated or failed downstream oxygen sensor.
- Restores reliable catalyst-monitoring information when sensor failure is confirmed.
Symptoms Of Wear Or Failure:
- Check engine or engine-management warning light.
- Oxygen sensor-related diagnostic fault codes.
- Downstream lambda sensor fault codes.
- Catalyst-efficiency-related fault codes.
- Emissions-system warning messages.
- Slow oxygen sensor response.
- Implausible downstream sensor readings.
- Intermittent sensor signals.
- Sensor reading remaining unusually fixed.
- Vehicle failing an emissions test.
- Increased exhaust emissions.
- Sensor heater circuit fault.
- Open- or short-circuit sensor faults.
- Damaged sensor wiring.
- Heat-damaged wiring insulation.
- Corroded or damaged electrical connector.
- Physical damage to the sensor.
- Sensor seized into its exhaust mounting point.
Why Replacement Matters:
- The downstream oxygen sensor is an important part of the vehicle's emissions-monitoring system.
- While a before-catalyst sensor is generally more directly involved in air-fuel mixture control, the after-catalyst sensor primarily allows the ECU to monitor the behaviour and efficiency of the catalytic converter.
- If the downstream sensor becomes slow, inaccurate or completely inoperative, the ECU may no longer receive trustworthy information about exhaust conditions after the catalyst.
- Replacing a confirmed faulty Porsche Lambda Oxygen Sensor 9A790626550 restores dependable downstream exhaust information and allows the ECU to monitor catalytic converter operation correctly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A790626550
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
Restore accurate exhaust monitoring and dependable emissions-system operation with this OE Match Lambda Oxygen Sensor. Designed for compatible Porsche applications, this sensor is installed AFTER the catalytic converter, where it monitors oxygen levels in the exhaust gases after they have passed through the catalyst.
Fits:
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-19
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-18
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-18
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-18
Diagram Ref No 18
Also known as an oxygen sensor, O2 sensor or lambda probe, the downstream lambda sensor provides important feedback to the engine control unit (ECU). Its primary role is to help the vehicle monitor the performance of the catalytic converter and identify abnormal exhaust or emissions-system behaviour.
The ECU can compare signals from sensors positioned before and after the catalytic converter. This information helps determine whether the catalyst is treating the exhaust gases as expected.
Operating directly in the exhaust system exposes the sensor to high temperatures, vibration, moisture, combustion deposits and repeated thermal cycling. With age, the sensing element can become contaminated or slow to respond, while the internal heater, electrical connector or wiring may also deteriorate.
This OE Match Lambda Oxygen Sensor provides a high-quality replacement for a slow, inaccurate or failed downstream sensor.
What This Product Does:
- Measures oxygen content in the exhaust gases.
- Operates AFTER the catalytic converter.
- Sends exhaust oxygen information to the ECU.
- Helps monitor catalytic converter performance.
- Allows comparison with upstream lambda sensor readings.
- Supports emissions-system diagnostics.
- Helps detect abnormal catalytic converter behaviour.
- Provides feedback on downstream exhaust conditions.
- Supports reliable engine-management monitoring.
- Helps identify emissions-system faults.
- Works with the vehicle's wider exhaust and emissions-control system.
- Replaces a slow, contaminated or failed downstream oxygen sensor.
- Restores reliable catalyst-monitoring information when sensor failure is confirmed.
Symptoms Of Wear Or Failure:
- Check engine or engine-management warning light.
- Oxygen sensor-related diagnostic fault codes.
- Downstream lambda sensor fault codes.
- Catalyst-efficiency-related fault codes.
- Emissions-system warning messages.
- Slow oxygen sensor response.
- Implausible downstream sensor readings.
- Intermittent sensor signals.
- Sensor reading remaining unusually fixed.
- Vehicle failing an emissions test.
- Increased exhaust emissions.
- Sensor heater circuit fault.
- Open- or short-circuit sensor faults.
- Damaged sensor wiring.
- Heat-damaged wiring insulation.
- Corroded or damaged electrical connector.
- Physical damage to the sensor.
- Sensor seized into its exhaust mounting point.
Why Replacement Matters:
- The downstream oxygen sensor is an important part of the vehicle's emissions-monitoring system.
- While a before-catalyst sensor is generally more directly involved in air-fuel mixture control, the after-catalyst sensor primarily allows the ECU to monitor the behaviour and efficiency of the catalytic converter.
- If the downstream sensor becomes slow, inaccurate or completely inoperative, the ECU may no longer receive trustworthy information about exhaust conditions after the catalyst.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A790626550
The product you are viewing cross references to these numbers
.jpg?width=197 "Lambda Oxygen Sensor, AFTER Catalytic Converter. Porsche 971.1 / 971.2 Panamera 2017-23 - 9A7906265E")
.jpg){kind=link}
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.2 Panamera 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
Restore accurate exhaust monitoring and reliable emissions-system operation with this Porsche Lambda Oxygen Sensor, part number 9A7906265E. Designed for compatible Porsche applications, this sensor is installed AFTER the catalytic converter, where it monitors oxygen content in the exhaust gases after they have passed through the catalyst.
Fits:
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.2 Panamera 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
Diagram Ref No 18
Also referred to as an oxygen sensor, O2 sensor or lambda probe, the downstream sensor provides the engine control unit (ECU) with information about exhaust conditions following catalytic treatment. This allows the vehicle's onboard diagnostic system to monitor catalytic converter performance and identify abnormalities within the emissions system.
The ECU can compare signals from oxygen sensors located before and after the catalytic converter. Differences between these readings help determine whether the catalyst is processing exhaust gases as expected.
Operating directly within the exhaust system exposes the sensor to extreme temperatures, vibration, moisture and combustion deposits. Repeated heating and cooling cycles can eventually cause the sensing element, heater circuit, wiring or electrical connections to deteriorate.
Replacing a confirmed faulty sensor with the correct Porsche Lambda Oxygen Sensor 9A7906265E helps restore dependable catalyst monitoring and accurate emissions-system diagnostics.
What This Product Does:
- Measures oxygen content in the exhaust gases.
- Operates AFTER the catalytic converter.
- Monitors exhaust conditions downstream of the catalyst.
- Sends oxygen-sensor information to the ECU.
- Helps monitor catalytic converter performance.
- Allows comparison with upstream lambda sensor readings.
- Supports onboard emissions diagnostics.
- Helps identify abnormal catalyst behaviour.
- Provides information used to detect emissions-system faults.
- Supports reliable exhaust-system monitoring.
- Helps the vehicle identify sensor and catalyst-related problems.
- Replaces a slow, contaminated or failed downstream sensor.
- Provides a Porsche replacement component for compatible applications.
Symptoms Of Wear Or Failure:
- Check engine or engine-management warning light.
- Lambda sensor-related diagnostic fault codes.
- Downstream oxygen sensor fault codes.
- Catalyst-efficiency fault codes.
- Emissions-system warning messages.
- Slow sensor response during diagnostics.
- Implausible downstream oxygen readings.
- Sensor output remaining unusually fixed.
- Intermittent sensor signals.
- Vehicle failing an emissions test.
- Increased exhaust emissions.
- Oxygen sensor heater circuit faults.
- Open- or short-circuit fault codes.
- Damaged sensor wiring.
- Heat-damaged wiring insulation.
- Corroded electrical terminals.
- Damaged electrical connector.
- Physical damage to the sensor.
Why Replacement Matters:
- The downstream oxygen sensor plays an important role in monitoring the vehicle's emissions-control system.
- If the sensor becomes slow, inaccurate or completely inoperative, the ECU may no longer receive dependable information about exhaust conditions after the catalytic converter.
- Replacing a confirmed faulty Porsche Lambda Oxygen Sensor 9A7906265E restores reliable downstream exhaust feedback and helps the vehicle accurately assess catalytic converter operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A7906265E
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.2 Panamera 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
Restore accurate exhaust monitoring and dependable emissions-system operation with this OE Match Lambda Oxygen Sensor. Designed for compatible Porsche applications, this sensor is positioned AFTER the catalytic converter, where it monitors oxygen levels in the exhaust gases after they have passed through the catalyst.
Fits:
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD Executive 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.2 Panamera 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 2.9L V6 2021-23
- Porsche 971.2 Panamera 4 Sport Turismo 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S 2.9L V6 2021-23
- Porsche 971.2 Panamera 4S Sport Turismo 2.9L V6 2021-23
Diagram Ref No 18
Also known as an oxygen sensor, O2 sensor or lambda probe, the downstream sensor supplies exhaust-gas information to the engine control unit (ECU). Its primary role is to help the vehicle assess catalytic converter operation and monitor the performance of the emissions-control system.
By comparing signals from lambda sensors positioned before and after the catalytic converter, the ECU can identify whether exhaust-gas treatment is occurring as expected and detect certain catalyst or sensor-related faults.
Lambda sensors operate in a particularly harsh environment, exposed to high exhaust temperatures, vibration, moisture, combustion deposits and repeated thermal cycling. Over time, the sensing element may become contaminated or slow to respond, while the internal heater, wiring or electrical connector can also deteriorate.
This OE Match Lambda Oxygen Sensor provides a high-quality replacement for a confirmed faulty, contaminated or slow-response downstream sensor.
What This Product Does:
- Measures oxygen content in the exhaust gases.
- Operates AFTER the catalytic converter.
- Monitors exhaust conditions downstream of the catalyst.
- Sends oxygen-sensor information to the ECU.
- Helps monitor catalytic converter performance.
- Allows comparison with upstream lambda sensor readings.
- Supports onboard emissions diagnostics.
- Helps identify abnormal catalyst behaviour.
- Provides information used to detect emissions-system faults.
- Supports reliable exhaust-system monitoring.
- Helps the vehicle identify sensor and catalyst-related problems.
- Replaces a slow, contaminated or failed downstream sensor.
- Provides a Porsche replacement component for compatible applications.
Symptoms Of Wear Or Failure:
- Check engine or engine-management warning light.
- Lambda sensor-related diagnostic fault codes.
- Downstream oxygen sensor fault codes.
- Catalyst-efficiency fault codes.
- Emissions-system warning messages.
- Slow sensor response during diagnostics.
- Implausible downstream oxygen readings.
- Sensor output remaining unusually fixed.
- Intermittent sensor signals.
- Vehicle failing an emissions test.
- Increased exhaust emissions.
- Oxygen sensor heater circuit faults.
- Open- or short-circuit fault codes.
- Damaged sensor wiring.
- Heat-damaged wiring insulation.
- Corroded electrical terminals.
- Damaged electrical connector.
- Physical damage to the sensor.
Why Replacement Matters:
- The downstream oxygen sensor plays an important role in monitoring the vehicle's emissions-control system.
- If the sensor becomes slow, inaccurate or completely inoperative, the ECU may no longer receive dependable information about exhaust conditions after the catalytic converter.
- Replacing a confirmed faulty Lambda Oxygen Sensor restores reliable downstream exhaust feedback and helps the vehicle accurately assess catalytic converter operation.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A7906265E
The product you are viewing cross references to these numbers