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Old 02-19-2014, 09:30 AM   #1
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Join Date: Jun 2011
Location: Springfield, MO
Posts: 12
My Ride: 328Ci; '01 330Cic
P1523 fault code

2000 328Ci Auto 130K

Driving to work the other morning my SES light came on, had the code read as

P1523 - 'A' Camshaft Position Actuator Signal Low (Bank 1) (M52: 'B' Camshaft Position Actuator Tight or Jammed).

I found a few posts about this, the best answer seemed to suggest vanos seals. But I used the beisan kit about 2 years ago and have had no issues since. Im not sure this is a seal issue.

I've had a pesky valve cover gasket leak for most of the winter, just been too cold to replace. It was a pretty slow leak, and i've kept plenty of oil in the car so I didn't really think it was a big deal.

The same morning the light popped on, I noticed a high pitched whine coming from the vanos area while the car was at idle, but once the ambient temperature got above 50 the whine went away.

Other than the noise and light, the car seems to run fine: steady idle, same performance, same fuel economy as before the light.

As far as cam shaft sensors and o2 sensors, they would be original, ie have not been replaced since new.

The plan was to swap the valve cover gasket this weekend, but now i've got to deal with this code. Could it be as simple as leaking oil from the vcg getting into the vanos?
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Old 03-05-2014, 08:22 AM   #2
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Join Date: Dec 2008
Location: New England, USA
Posts: 201
My Ride: 1999 323i *sport*
Did you ever figure this out? I'm having the same issue, including a previous valve cover gasket leak that I "fixed" with silicone...
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Old 03-05-2014, 09:28 AM   #3
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Join Date: Aug 2012
Location: Clemson, SC
Posts: 1,456
My Ride: 2001 BMW 325i ZSP
Change your can sensor (intake). Don't know how much more descriptive an error msg could be!
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p1523, ses, vanos

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