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Old 11-17-2015, 07:41 AM   #21
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My Ride: 2001 330Ci
I wonder if the oil temp data (changes in resistance actually) are actually getting to the ECU. I'd check the wiring closely.
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Old 11-17-2015, 08:32 AM   #22
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My Ride: 330CiC, M5, X5, E93
Loose connector, loose female terminals inside the connector, broken wire inside the wiring harness.
Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 05-15-2016, 10:46 AM   #23
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Oil pressure sensor

I just want to share how my P0198 got fixed.

I dont agree with this big tall picture in this thread. According to my very limited youtube base knowledge, Oil pressure Sensor (short/fat) is the Temperature Sensor. Or at least I thought it was oil temperature sensor.

Anyhow, I changed the oil pressure sensor of this picture calling it temperature sensor and my code is gone. I've driven for couple of days and it did not come back. It was a short/fat sensor that needed 24mm wrench

Just an FYI, I have changed oil sender unit or oil level sensor unit before above but that did not fix it
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oil temperature, sensor

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