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777N54 777N54 is offline
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Join Date: Oct 2021
Car: 335i
Default N54 Getting Codes 2e83, 2e85, 2e8b - 05-03-2022, 06:34 PM

Hey guys,

My 08 335i has been throwing these shadow codes with no CEL:

2e83: Electrical Cooling Pump, Low-power mode
2e85: Electrical Cooling Pump, Communication
2e8b: Intelligent Battery Sensor, Signal

The car does not overheat at all and ive been driving it very spirited. The water pump seems like its working fine and was replaced only about 22k miles ago. I checked the battery compartment to see if the IBS cable was unplugged but everything was plugged in and looked snug. I searched around and saw someone with similar problems changed out his Alternator Voltage Regulator and it cleared the codes but just wanted to make sure before i throw parts at it. All suggestions are appreciated. Thanks!
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