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The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

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Old 04-09-2020, 04:42 PM   #1
Rebeliias90
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Join Date: Mar 2020
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2005 BMW 325XI LIMP MODE Please Help

I have an Auto Trans. 2005 BMW 325XI with 110,000 miles. Car ran good and had a lot service done to it before it sat for a couple years, but after starting up this year the car had some issues with misfires due to a bad MAF Sensor and the infamous Limp Mode began, so the MAF Sensor was replaced along with a ripped rubber boot and it made a big difference with the idling and misfires but the Limp Mode remained. I then read car codes through a friends Snap On Scanner and got some codes.

ENGINE;
P0600 - Serial Communication Link

P0037 - H02S Heater Circuit Control Low Bank 1 Sensor 1

P0057 - Ho2S Heater Circuit Control Low Bank 2 Sensor 1

217 - CAN: Electronic Transmission Control(EGS) Signal

ABS;
58 - CAN: Open Circuit to AGS

So after reading codes I went through all the ECM/DME(Circuit Boards also), ABS and Oxygen Sensor wirings, and didn't see anything disconnected, damaged, or burnt. Now I'm not sure wheather to replace HO2 Sensors and if that will fix my Limp Mode, or if there's a bigger electrical problem because my front turn signals aren't working either, my Climate Control Unit also stopped working or when my shifter is put back in Parking after a drive the keys get stuck in the Ignition. I have to manually push down on a lever under the shifter to release keys from the ignition. Any advice is very much appreciated, Thanks.
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Old 04-10-2020, 09:42 AM   #2
77'911
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If the o2 sensors are original, you might consider replacing them. You might take a voltmeter and test the battery(load, no load, charging, charging under load, etc.) and alt. You might consider clearing the codes after you install the sensors and see what comes back. 110k is not that much on these cars, you should be able to right the xi.
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