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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 03-18-2017, 11:14 PM   #1
Registered User
Join Date: Mar 2017
Location: Sacramento Ca
Posts: 6
My Ride: 2003 325i
Bav Auto Code Reader+ diagnosis of my problem

Hello, everyone. I am a new member and new to the e46. My car: 2003 325i sedan non-sulev, automatic with 149k. I bought the car off my parents and they maintained it ,well.

I was driving on the freeway and, all of a sudden, the car starting slowing down badly, I had loss of power, fuel economy was terrible, and the rpms started fluctuating around. There was no oil pressure lamp, and temperature was normal. I didn't get any service lights at all. I was able to drive it home because the problem seemed to correct itself.

The next morning, the "service engine soon" lamp was on. So I decided to scan for fault codes. I bought the BavAuto SR-300x scanner/resetter and made a short video to show what I am doing. So, according to the manual that came with the device, the first number corresponds to the code table. The codes in the video correspond to each of the following descriptions in their respective order: "Coolant thermostat jammed open" ," o2 sensor adaptation limit, Cyl#1-3" ,"o2 sensor adaptation limit, Cyl 4-6" ,"o2 sensor control limit, Cyl 1-3" , "Catalytic converter efficiency, Cyl #1-3".
Is their someone here that can verify that I am reading/using the reader correctly, and can explain the descriptions in any further detail? _sl_

Last edited by mkc325; 03-18-2017 at 11:15 PM. Reason: added video
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