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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 06-24-2016, 12:57 PM   #1
LouieLou609
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Join Date: Jul 2015
Posts: 6
EML light and check engine light on, help!

P0300
P1542
P1188
P0304
P0303
P0340
Those are the engine codes for my e46 328ci (before the cam shaft sensor was just put on)

Is it possible that my DME (ECU) is bad and is throwing random codes? I don't have a windshield cowl and a cabin filter housing on the car, I'm thinking that my ecu got wet and caused these problems and put the car in limp mode.. If this is the case I'll swap out the ECU's and put a windshield cowl and a cabin filter housing on.. What do you guys think? I already changed my throttle body with TPS and new cam shaft sensor

Last edited by LouieLou609; 06-24-2016 at 01:43 PM.
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Old 06-25-2016, 08:04 AM   #2
markusmarkus
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Join Date: Jul 2008
Location: USA
Posts: 4,226
My Ride: 2001 330Ci
The ECU is fine. The codes indicate some misfires, a bad can position sensor and an error in the gas pedal position sensor.

This is the website I use to check codes: http://www.equus.com/DTC
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