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Old 11-07-2016, 10:04 AM   #1
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Join Date: Jul 2016
Location: Durham
Posts: 86
My Ride: 323i
VANOS Actuator Jammed

What's wrong:
This morning, the CEL made it's first appearance on my dash today after being in my possession now for 4 years. Took it directly to AutoZone to have the codes read and they are as follows:

-P1523 M52: "B" Camshaft Position Actuator Tight or Jammed-

-P0500 Vehicle Speed Sensor ?A? Malfunction-

The VANOS seals were replaced at 200k and have shown no issues up until now (214k); the rest of the assembly is OE.

Now what:
Threads suggested replacing the VANOS piston seals to fix the code but I should be able to rule that out. Others say replace the sensor exhaust/intake CPS but I believe there are different codes for low signal sensors. Should I try the sensors first or find a new solenoid?

Any advice is appreciated.

Last edited by BullCityBimmer; 11-09-2016 at 09:33 AM.
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Old 11-09-2016, 09:56 AM   #2
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Old 11-09-2016, 12:06 PM   #3
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Location: Montreal
Posts: 279
My Ride: 323i
One thing I would check first is the spring loaded "piston" behind the vanos solenoid.
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Old 02-04-2017, 09:23 PM   #4
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My Ride: 2000 328ci
Thanks for sharing that link ben!

Life saver!
DavidValentino is offline   Reply With Quote

actuator, cps, p1523, solenoid, vanos

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