water pump, and alternator missing?

mo-powah-babyyyy · 01-22-2023, 08:08 PM

Hey guys,

Did an alternator change, followed by oil filter housing gasket, serpentine belt and coolant flange on the N52 engine, but im for some reason i get these codes,

2E85 BSD, message; electric coolant pump:
Missing
2ECC BSD, message; alternator: Missing

I didnt touch the water pump so im guessing its the belt? but its on ok, could the tensioner cause this?

Thanks for any help!!

StradaRedlands · 01-22-2023, 10:57 PM

I don't have a fix for you, but they are all on the same "circuit" so they all show as bad. The oil level sensor is as well, maybe some other bits and pieces. Something on the circuit is a problem, probably the alternator. What kind did you put in? If it's a no-name Amazon one, there's your problem. If it is the correct Bosch/Valeo one... well, I've got nothing!

mo-powah-babyyyy · 01-23-2023, 03:43 PM

its Bosch, refurbished from FCP Euro. just wierd that the water pump is missing as well though? I didnt go near this.

Im still leaning towards the tensioner, but if there is something else anyone can think of?

The battery is has 11V while running, should be around 14, so there is something odd there. Unless the alternator i received is faulty, but then what would trigger the water pump to disconnect?

rjahl · 01-23-2023, 05:02 PM

Probably the alternator or the connections.

I had a faulty / new alternator take out the BSD bus as well. Alternator worked but the bus was dead. Changed alternator and everything worked as it should.

The fact that it's not charging is telling you something........

mo-powah-babyyyy · 01-23-2023, 06:57 PM

Will do, ill check it, but the water pump should still be running right?

StradaRedlands · 01-23-2023, 07:10 PM

Quote:

Originally Posted by mo-powah-babyyyy

its Bosch, refurbished from FCP Euro. just wierd that the water pump is missing as well though? I didnt go near this.

Im still leaning towards the tensioner, but if there is something else anyone can think of?

The battery is has 11V while running, should be around 14, so there is something odd there. Unless the alternator i received is faulty, but then what would trigger the water pump to disconnect?

Well, there goes my idea! At least you can send it back...

rjahl · 01-23-2023, 07:35 PM

Without BSM bus data the water pump will run at full speed.

mo-powah-babyyyy · 01-24-2023, 07:48 PM

Quote:

Originally Posted by StradaRedlands

Well, there goes my idea! At least you can send it back...

I'm going to replace the tensioner to see if that works if not it has the be the alternator. Then ill send it back!! Keep you guys posted.

mo-powah-babyyyy · 01-24-2023, 07:50 PM

Quote:

Originally Posted by rjahl

Without BSM bus data the water pump will run at full speed.

Think im a on the dumb side with this buts what is the BUS data? and how could i access it?

rjahl · 01-25-2023, 06:35 PM

Google BMW BSM data bus.

01-22-2023, 08:08 PM	#1
mo-powah-babyyyy New Member 3 Rep 18 Posts Drives: BMW E92 328I Join Date: Aug 2022 Location: Los Angeles iTrader: (0)	water pump, and alternator missing? Hey guys, Did an alternator change, followed by oil filter housing gasket, serpentine belt and coolant flange on the N52 engine, but im for some reason i get these codes, 2E85 BSD, message; electric coolant pump: Missing 2ECC BSD, message; alternator: Missing I didnt touch the water pump so im guessing its the belt? but its on ok, could the tensioner cause this? Thanks for any help!!
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01-22-2023, 10:57 PM	#2
StradaRedlands Brigadier General 4942 Rep 3,000 Posts Drives: 2006 BMW 330i MT Join Date: Dec 2021 Location: SoCal iTrader: (2) Garage List 2006 BMW 330i [8.21] 2009 BMW 328i Touri ... [7.90] 2013 BMW X5 35i [7.63] 2011 BMW 528i [8.75] 2006 Mazda3 [5.50]	I don't have a fix for you, but they are all on the same "circuit" so they all show as bad. The oil level sensor is as well, maybe some other bits and pieces. Something on the circuit is a problem, probably the alternator. What kind did you put in? If it's a no-name Amazon one, there's your problem. If it is the correct Bosch/Valeo one... well, I've got nothing!
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01-23-2023, 03:43 PM	#3
mo-powah-babyyyy New Member 3 Rep 18 Posts Drives: BMW E92 328I Join Date: Aug 2022 Location: Los Angeles iTrader: (0)	its Bosch, refurbished from FCP Euro. just wierd that the water pump is missing as well though? I didnt go near this. Im still leaning towards the tensioner, but if there is something else anyone can think of? The battery is has 11V while running, should be around 14, so there is something odd there. Unless the alternator i received is faulty, but then what would trigger the water pump to disconnect?
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01-23-2023, 05:02 PM	#4
rjahl Colonel 996 Rep 2,287 Posts Drives: Z4 35is Join Date: Jun 2011 Location: Tampa iTrader: (0) Garage List 2012 Z4 35is [0.00]	Probably the alternator or the connections. I had a faulty / new alternator take out the BSD bus as well. Alternator worked but the bus was dead. Changed alternator and everything worked as it should. The fact that it's not charging is telling you something........
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01-23-2023, 06:57 PM	#5
mo-powah-babyyyy New Member 3 Rep 18 Posts Drives: BMW E92 328I Join Date: Aug 2022 Location: Los Angeles iTrader: (0)	Will do, ill check it, but the water pump should still be running right?
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01-23-2023, 07:35 PM	#7
rjahl Colonel 996 Rep 2,287 Posts Drives: Z4 35is Join Date: Jun 2011 Location: Tampa iTrader: (0) Garage List 2012 Z4 35is [0.00]	Without BSM bus data the water pump will run at full speed.
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01-25-2023, 06:35 PM	#10
rjahl Colonel 996 Rep 2,287 Posts Drives: Z4 35is Join Date: Jun 2011 Location: Tampa iTrader: (0) Garage List 2012 Z4 35is [0.00]	Google BMW BSM data bus.
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