Lambda Sensor, AFTER Catalytic Converter. Porsche 957 Cayenne 4.8L S / GTS / TURBO / TURBO S 2007-10  ❭  958906262Q

Lambda Sensor, AFTER Catalytic Converter. 

The Lambda Sensor, After Catalytic Converter is a critical emissions control and engine management component designed to monitor the oxygen content of exhaust gases after they have passed through the catalytic converter. Also known as a post-catalyst oxygen sensor, it provides feedback to the engine control unit (ECU) regarding catalytic converter efficiency and overall emissions system performance.
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Fits:

• Porsche 957 Cayenne S / GTS 4.8L 2007-10
• Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10  

Diagram Ref No 21

Manufactured to OEM specifications, this lambda sensor helps ensure the vehicle meets emissions standards while allowing the ECU to continuously monitor and optimise engine operation. By accurately measuring oxygen levels in the exhaust stream, it supports efficient emissions control and helps identify catalytic converter performance issues before they become more serious.

What This Product Does:

• Monitors oxygen levels in exhaust gases after the catalytic converter
• Measures catalytic converter efficiency and performance
• Provides real-time feedback to the engine control unit (ECU)
• Supports emissions control system monitoring
• Helps maintain compliance with emissions regulations
• Assists the ECU in diagnosing exhaust and catalyst-related faults

Symptoms Of Wear Or Failure:

• Check engine light illumination
• Catalytic converter efficiency fault codes
• Failed emissions or MOT tests
• Increased exhaust emissions
• Reduced fuel economy in some cases
• Engine management warning messages
• Oxygen sensor-related fault codes
• Incorrect catalytic converter monitoring data

Why Replacement Matters:

• Restores accurate exhaust oxygen monitoring
• Ensures proper catalytic converter efficiency monitoring
• Helps maintain emissions compliance and MOT readiness
• Prevents persistent engine management warning lights
• Supports efficient engine management system operation
• Allows accurate diagnosis of catalyst and exhaust system performance
• Reduces the risk of increased emissions and environmental impact
• Maintains long-term reliability of the emissions control system

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958906262Q

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