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Porsche > 991 (911) MK1 2012-2016 > 991.1 Turbo 3.8L (520 Bhp) 2014-16 > Exhausts >

Gas Temperature Sensors

Gas Temperature Sensors

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Exhaust Gas Temperature Sensor. Porsche 991 Turbo / Turbo S 2014-19 - 9A790608100, 9A260625000
2
Exhaust Gas Temperature Sensor. Porsche 991 Turbo / Turbo S 2014-19
Special Order item
9A790608100
Product Information
Product Information
Exhaust Gas Temperature Sensor.
The Genuine Porsche Exhaust Gas Temperature Sensor 9A790608100 is an exhaust-system monitoring sensor designed for compatible Porsche vehicles.
Sold Each.
x2 Required Per Car.

Fits:
  • Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
  • Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
  • Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
  • Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2016-19
  • Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
  • Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2016-19  
Cars With Engine Codes:
DBC / DBCB / DHN / DHNA

Diagram Ref No 35

The sensor measures the temperature of exhaust gases and sends this information to the vehicle's engine management system. Accurate exhaust-temperature information allows the control system to monitor operating conditions and, depending on the vehicle and engine specification, manage strategies designed to protect emissions equipment, turbocharger and exhaust components from excessive temperatures.

A faulty exhaust gas temperature sensor can provide inaccurate readings or stop communicating altogether, potentially triggering warning lights, diagnostic fault codes and protective engine-management strategies.

What This Product Does:
The exhaust gas temperature sensor, commonly abbreviated to EGT sensor, monitors the temperature of gases flowing through a specific part of the exhaust system.

Exhaust temperatures can become extremely high, particularly during high engine loads and certain emissions-control operating conditions.

The sensor converts temperature information into an electrical signal that can be interpreted by the vehicle's control system.

Depending on the particular Porsche application, this information can be used to:

  • Monitor exhaust gas temperature
  • Support engine-management calculations
  • Protect exhaust-system components from excessive heat
  • Support emissions-system operation
  • Monitor catalytic converter or particulate-filter operating conditions where applicable
  • Assist thermal-management strategies
  • Help protect turbocharger and exhaust components where applicable
  • Detect abnormal exhaust-temperature conditions

Accurate temperature information is therefore important for both performance monitoring and component protection.

Symptoms Of Wear Or Failure:
A faulty EGT sensor may produce several symptoms depending on the vehicle and type of failure.

Possible signs include:

  • Check-engine warning light
  • Exhaust or emissions-system warning
  • Stored diagnostic trouble codes
  • Implausible exhaust-temperature readings
  • Intermittent temperature readings
  • Loss of sensor communication
  • Reduced engine performance
  • Protective or limp-home mode
  • Changes in emissions-system operation
  • Increased fuel consumption
  • Regeneration-related problems on vehicles equipped with a particulate filter
  • Recurring warning messages after fault codes are cleared

Some sensor failures may initially cause no noticeable drivability symptoms other than a warning light.

Why Replacement Matters:
A correctly operating exhaust gas temperature sensor allows the vehicle's control system to know what is happening thermally inside the exhaust system.

Replacing a confirmed faulty sensor helps:

  • Restore accurate exhaust-temperature monitoring
  • Resolve associated sensor fault codes
  • Restore correct engine-management information
  • Support emissions-system operation
  • Maintain thermal protection strategies
  • Reduce the risk of incorrect protective intervention
  • Support correct particulate-filter operation where applicable
  • Restore reliable communication between the exhaust system and control unit

Ignoring a failed sensor can leave the engine-management system without accurate information needed for exhaust thermal management.



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9A790608100
9A790608100
9A260625000

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About Gas Temperature Sensors

Exhaust Gas Temperature Sensors for Porsche | Precision Monitoring for Peak Performance

Exhaust Gas Temperature Sensors (EGT sensors) are vital components in your Porsche’s exhaust system, designed to monitor exhaust gas temperature and protect key engine and emission components. These sensors provide real-time feedback to the engine control unit (ECU), helping maintain optimal air-fuel ratios, boost pressure, and turbocharger performance.

At Design911, we supply a comprehensive range of EGT sensors for Porsche models, including 911, Cayman, Boxster, Panamera, and Macan. Built to manufacturer-level standards, each sensor ensures accurate data transmission, reliability under extreme heat, and seamless integration with your vehicle’s electronics.

Whether you’re replacing a faulty sensor or upgrading during an engine rebuild, our high-quality exhaust temperature sensors are essential for safeguarding performance and efficiency.

What Do Exhaust Gas Temperature Sensors Do?

The EGT sensor measures the heat of exhaust gases leaving the combustion chamber or turbocharger. This data helps the ECU adjust fueling, ignition timing, and boost pressure to prevent overheating and engine damage.

Core Functions:

  • Measures exhaust gas temperature in real time.
  • Prevents overheating of turbochargers and catalytic converters.
  • Optimises air-fuel ratio for efficiency and performance.
  • Reduces emissions by supporting accurate combustion control.
  • Protects vital engine components from thermal stress.

Without accurate temperature readings, engines can experience reduced performance, detonation, or premature component wear.

Why Do EGT Sensors Fail?

Operating under constant heat, vibration, and contamination, EGT sensors eventually degrade and lose accuracy.

Common Causes of Failure Include:

  • Thermal fatigue due to prolonged exposure to extreme exhaust heat.
  • Contamination from fuel additives, oil, or soot buildup.
  • Wiring corrosion or electrical connector damage.
  • Sensor tip oxidation from moisture or chemicals.
  • Internal circuit failure from repeated heat cycling.

When an EGT sensor fails, it can cause engine warning lights, poor fuel economy, reduced performance, and even turbocharger damage if left unchecked.

Why Replace or Upgrade Your Exhaust Gas Temperature Sensor?

Replacing a faulty or aged EGT sensor ensures your Porsche maintains the correct exhaust temperature monitoring for performance, reliability, and safety.

Key Benefits:

  • Restores accurate exhaust temperature readings.
  • Improves engine performance and fuel efficiency.
  • Prevents turbo and catalytic converter damage.
  • Ensures proper ECU communication and control.
  • Precision-fit design for Porsche 911, Cayman, Boxster, Macan, Panamera and more.
  • Crafted from heat-resistant, corrosion-proof materials.

A new EGT sensor is a small investment that prevents costly engine repairs and maintains performance consistency.

Highlights:

  • High-quality EGT sensors for all Porsche models.
  • Designed for accuracy under high exhaust temperatures.
  • Restores engine performance and emission control.
  • Built from corrosion- and heat-resistant materials.
  • Plug-and-play installation with reliable sensor calibration.
  • Ideal for both standard maintenance and performance builds.

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