BMW Exhaust Temperature Sensor - Genuine BMW 12527835466

Product Information

BMW Switches and Sensors diagram for M5

An Exhaust Gas Temperature (EGT) Sensor is a sensor in a vehicle’s exhaust system that measures the temperature of exhaust gases as they exit the engine. This information is essential for engine control systems, as it helps optimize fuel-air mixtures, prevent overheating, and ensure the catalytic converter and other emissions components operate within safe temperature ranges. EGT sensors are commonly found in diesel engines and high-performance vehicles, where exhaust temperature management is critical.

• Poor Fuel Economy: A faulty EGT sensor can give inaccurate temperature readings, leading the engine control module (ECM) to adjust the fuel-air mixture improperly. This can result in inefficient combustion, leading to higher fuel consumption and reduced fuel economy
• Check Engine Light: A failing EGT sensor often triggers the Check Engine light on the dashboard, as the ECM detects abnormal temperature readings or inconsistencies. Diagnostic trouble codes (DTCs) specific to the EGT sensor may also be logged in the vehicle’s system
• Engine Performance Issues: If the ECM receives incorrect temperature data from the EGT sensor, it may reduce engine power to prevent potential overheating, especially during heavy acceleration or high-load situations. This can cause reduced power, sluggish acceleration, or even limp mode activation

About Genuine BMW

The original parts used by BMW to build your car are available as replacement parts under the “Genuine BMW” brand. When ordering a Genuine BMW part you are guaranteed to get the same part that you would pick up from your local dealerships part department. Genuine BMW parts have been built to BMW’s stringent standards and are the same quality of the original parts used to build your Ultimate Driving Machine.

You may not realize this, but the parts that make up your BMW are not necessarily manufactured by BMW. No cause for concern, as BMW designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for BMW for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine BMW parts box and find an OEM branded part inside, simply with the addition of a BMW logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.