Also- if the external temp sensor, or a coolant sensor is giving an implausible signal, the fans can run at unusual times, or sometimes continually in some models. Certainly when the IAT and external temp on my R32 motor were implausible, the Touran would run it's fan seemingly randomly - even a few seconds after start-up on a ThreadStarter Join Date: Mar 2012 Posts: 2 Likes: 0 Received 0 Likes on 0 Posts 2.0T coolant sensor location I am trying to resolve a P2181 code by replacing the Thatis the coolant level warning. Quote: Originally Posted by '01-S8. Hey guys, So I think my coolant temp sensor has gone faulty. The dash warning light comes up but its temp never goes up past operating Theambient air temperature sensor monitors ambient air and sends the data it has gathered to the PCM. This information is used to display outside air temperature and to modify the operation of the Thats why, a visual inspection of the (ECT) sensor, will sometimes reveal a problem. This could be, severe corrosion around the terminal, a crack in the sensor or coolant leaks around the sensor. So, in most cases the only way to know if the (ECT) sensor is good or bad. In addition, is to measure its resistance and voltage readings. . #1. Having an issue with my ambient air temp, my car was in a minor accident awhile back and damaged the front clip and core support ect. I replaced the damaged parts without any issues and got everything working properly except the ambient air temp sensor. Didn't worry about it until i realized my A/C didn't work because of it. Its buried deep. Pull off the rear decorative cover with the four rings on it. That plastic "hose" with the blunt end should be removed so you can get down there to disconnect the connector and remove the clip holding the sensor in place. It's a cheap sensor that goes bad a lot. my Beetle with the 1.8L turbo engine had the same sensor TheECT sensor is a high-authority sensor whenever the engine is cold because ignition timing is tailored according to the engine coolant temperature. It also provides input for idle air control (IAC) position, oxygen sensor closed-loop status, on/off times for the canister purge, and idle speed. AmbientTemperature Sensor Location To my knowledge the bumper / grille have to be slid out (in maintenance mode) to replace the temperature sensor. Please let me know if you are able to replace it without doing this. (present), 2008 Porsche Boxster (present), 2001 Audi TT Quattro (present), 2006 Audi S4 (past), 1998 Audi A4 NAY8.

audi a4 b8 outside temperature sensor location