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      01-23-2012, 02:13 PM   #1
blaknite7
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Drives: 07 335I
Join Date: Feb 2011
Location: Arizona

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Unhappy Power Loss due to water pump codes?

Hey all, I’m curious if anyone has experienced power loss (little to no boost) due to error codes associated with the water pump?

I’m experiencing a loss of power, but when I turn off the car and back on again everything seems fine. I pulled error codes from the DME that were 2E81 and 2E82 which are flow/water pump codes. I have been noticing the water pump get louder (like a card stick in a bike spoke) so I believe the codes are legitimate, but I wouldn’t think to experience power loss unless the computer is limiting power to prevent engine damage… makes sense but curious if anyone else has see that?

I have a JB4 and I was monitoring the water temperature as part of my stealth gauge (not sure the accuracy) but everything seemed to be within a normal operating mode, ~180-190°F water temps and 220°F Oil temps. The issue is happening on at least 2 maps of the JB4, not sure about stock yet since its intermittent. Any thoughts?
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335I - 2007 - JB4
X5 - 2009
1.8T - 2003 - APR Stage 3+
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