GenuineOEM updated Green 4-pin D-shaped connector (20mm) coolant temperature sensor, located in the cooling flange located on the side of the cylinder head. Controls ECU function of fuel and cluster temperature gauge. Old color was Black, superseded to Green. Please check existing sensor color before ordering. Sealing gasket (N90316802) Whereis the outside temp sensor located? Guest-only advertisement. Register or Log In now! Reason I asked is because it's constantly 8 degrees celcius too lhave an Audi A4 2.8L Quattro 2001 the engine oil temperature sensor light is used to come on and off and now its on all the time. l bought the sensor from the dealership and when we replaced the timing belt the spot where the sensor is supposed to be mounted is plugged and there is no wire to connect the sensor , there is Coolanttemp? 1.8T? back of the engine. There's a replacement article that shows it. NixTT Discussion starter. 31 posts · Joined 2012. #1 · Oct 16, 2012. The outside temp reading on our TT has always read high. Thought I would check it today. Seems the bracket has snapped and sensor has gone. Just a plug resting behind bumper. If that's the sensor wire, why is there still a reading that does go up and down (albeit A4(B6 Platform) Discussion - Audi A4 B6 - DIY Coolant Sensor Replacement - V6 engine - Looked for pictures on a coolant sensor repair but no luck finding a 2003 B6 with the V6. So after 3 hours looking for the sensor I finally found it. Hopefully this helps. Word of caution, its a tight fitting engine and your gonna Mycar is telling me it's a balmy 38º outside but I have a feeling it's just a little bit colder. So I stopped by the Audi dealer and picked up a new sensor. Ambient Temperature Sensor Location Guest-only advertisement. (present), 2008 Porsche Boxster (present), 2001 Audi TT Quattro (present), 2006 Audi S4 (past), 1998 Audi A4 Todaywe will see the instructions that will allow us to remove the coolant temperature sensor bulb on an Audi A4 B6, second series, with 1.8 turbo engine. First of all we open the bonnet of our car and we go to identify the sensor, which we find on the back of the engine; we will have to remove the coolant duct, where our temperature Tryputting a resistor in series with the sensor. (more) Say it's 50 degrees out. Unplug the sensor and measure the resistance across the sensor. Now if the dash readout is 55 degrees, you're looking at about a 10% correction needed, so put a resistor in series with the sensor that is 10% of the measurement you took. Re 2.0t coolant temperature sensor location. It's really hard to explain but it's pretty much hidden, it's close to bulk head on passenger side. 11-18-2009 03:11 AM #3. Quattro. Veteran Member Four Sqk2.