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Lambda Sensors / Probes
By OE Match
- Porsche 957 Cayenne 3.6L 2007-10
Restore accurate exhaust monitoring and dependable engine-management operation with this OE Match Lambda Oxygen Sensor,. Designed for compatible Porsche applications, this sensor is positioned AFTER the catalytic converter and is specified for the exhaust bank serving cylinders 1–3.
Fits:
- Porsche 957 Cayenne 3.6L 2007-10
Diagram Ref No 31
Also known as an oxygen sensor, O2 sensor or lambda probe, this component measures the oxygen content present in the exhaust gases. Because this particular sensor is located downstream of the catalytic converter, one of its primary roles is to provide the engine control unit (ECU) with information used to monitor catalytic converter operation and overall exhaust-system performance.
The ECU compares information from sensors positioned before and after the catalytic converter. Changes in these signals allow the engine-management system to assess whether the catalyst is storing and converting exhaust pollutants as expected.
Lambda sensors operate in an exceptionally demanding environment, exposed to very high exhaust temperatures, vibration, moisture and combustion deposits. Over time, the sensing element can become contaminated or electrically degraded, while wiring and connectors may suffer heat-related damage.
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.
- Is positioned AFTER the catalytic converter.
- Is specified for the exhaust bank serving cylinders 1–3.
- Sends exhaust oxygen information to the ECU.
- Helps monitor catalytic converter performance.
- Allows comparison between upstream and downstream exhaust readings.
- Helps the ECU identify abnormal catalyst operation.
- Supports emissions-system diagnostics.
- Helps detect implausible exhaust sensor readings.
- Supports correct engine-management monitoring.
- Helps maintain reliable emissions-control system operation.
- Replaces a slow, contaminated or failed oxygen sensor.
- Provides an OE Match replacement for compatible Porsche applications.
- Check engine or engine-management warning light.
- Oxygen sensor-related diagnostic fault codes.
- Catalyst efficiency-related fault codes.
- Slow or implausible downstream oxygen sensor readings.
- Intermittent sensor signal. Emissions warning messages.
- Vehicle failing an emissions test.
- Increased exhaust emissions.
- Increased fuel consumption in some circumstances.
- Rough or inconsistent engine operation where sensor faults affect control strategy.
- Damaged sensor wiring. Heat-damaged wiring insulation.
- Corroded or contaminated electrical connector.
- Sensor heater circuit fault.
- Open or short-circuit diagnostic faults.
- Sensor becoming seized in the exhaust mounting point.
Why Replacement Matters:
- The downstream oxygen sensor provides important information about the condition and operation of the emissions-control system.
- The catalytic converter chemically converts harmful exhaust gases into less harmful emissions. To assess catalyst performance, the ECU can compare oxygen-sensor behaviour before and after the catalytic converter.
- If the downstream sensor becomes slow, inaccurate or completely inoperative, the ECU may no longer receive reliable information about catalyst operation. This can result in diagnostic fault codes and an illuminated engine-management warning light.
- A failed sensor can also make accurate diagnosis of the catalytic converter more difficult. If the ECU cannot trust the downstream sensor signal, it may be unable to distinguish reliably between a sensor problem and an actual catalyst-efficiency issue.
- Replacing a confirmed faulty OE Match Lambda Oxygen Sensor restores dependable downstream exhaust monitoring and allows the engine-management system to assess emissions-system performance correctly.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95560613630
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.6L 2007-10
Fits:
Porsche Cayenne 957 V6 3.6L (before catalyst)
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.
958906262A
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.6L 2007-10
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.
Fits:
Porsche Cayenne 957 V6 3.6L (before catalyst)
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.
PAB906262BA
The product you are viewing cross references to these numbers
OEMatch Lambda Sensors / Probes — Fit, Function, Confidence
OEMatch Lambda Sensors / Probes components are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable. Lambda sensors measure oxygen in exhaust gases and report to the engine control unit so fuel injection and ignition are adjusted for correct combustion in Porsche models, helping to maintain efficient running and emissions control.
Available Types
- Narrowband heated zirconia sensors for stoichiometric control
- Wideband (UEGO) sensors for precise air-fuel ratio feedback
- Pre-catalyst and post-catalyst probes for exhaust monitoring
Understanding OEMatch Lambda Sensors / Probes
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original lambda sensors / probes.
OE (Original Equipment) refers to parts matching original specifications for the lambda sensors / probes and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM lambda sensors / probes engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Lambda sensors detect oxygen content in exhaust gases and provide a feedback signal used by the ECU to regulate fuel delivery and maintain correct combustion. Sensor designs vary by application; heated elements assist rapid warm-up, while wideband units offer greater resolution for tuning and diagnostics. Correct sensor operation supports catalytic converter efficiency and engine management across a range of Porsche engines.
Benefits Include
- Restores accurate air-fuel control for stable idle and part-throttle response
- Helps reduce emissions and supports catalytic converter protection
- Improves fuel economy by enabling correct mixture control
Why Lambda Sensors / Probes Wear and Fail
- Contamination of the sensing element by oil, coolant or deposits
- Thermal cycling and element degradation from repeated extreme temperatures
- Wiring damage, connector corrosion or poor electrical contact
The Importance of Replacing with OEMatch Lambda Sensors / Probes
Replacing a degraded sensor restores reliable feedback to the ECU, reduces the risk of poor combustion or catalytic converter damage and helps keep emissions within expected limits for Porsche models. OEMatch supplies sensors chosen for compatibility with Porsche mounting and electrical interfaces to simplify replacement while supporting accurate air-fuel control.
Advantages
- Direct-fit options that match factory mounting points and electrical connections
- Available with heated elements or wideband sensing for specific applications
- Corrosion-resistant housings and common connector types for straightforward installation
