BMW M3 Forum (E90 E92) - View Single Post - Increased Emissions and Ambient Temp Sensor

Lorde · 12-23-2011, 10:35 AM

They replaced the temp sensor, with no luck, still reading 122 degrees. They cleared the code and it came back on again. I am thinking that there is a short in the wiring from when they replaced the front bumper. Something is causing the circuit to stay closed. I read that an open circuit reads -40 degrees.

They said that the temp sensor needed to recalibrate but I think it's BS, have read that simple replacement of the sensor has solved the problem immediately. I'll five it a shot but will take it back on Monday if it doesn't work.

12-23-2011, 10:35 AM	#4
Lorde Ya ya ya, I am Lorde, ya ya! 268 Rep 2,771 Posts Drives: E90 M3, 2015 SQ5 Join Date: May 2011 Location: Snig iTrader: (10) Garage List 2008 BMW M3 E90 [0.00]	They replaced the temp sensor, with no luck, still reading 122 degrees. They cleared the code and it came back on again. I am thinking that there is a short in the wiring from when they replaced the front bumper. Something is causing the circuit to stay closed. I read that an open circuit reads -40 degrees. They said that the temp sensor needed to recalibrate but I think it's BS, have read that simple replacement of the sensor has solved the problem immediately. I'll five it a shot but will take it back on Monday if it doesn't work. Last edited by Lorde; 12-23-2011 at 10:46 AM..
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