HELP with M62TU code 1522 (cam timing- reluctor wheel question)

[motuman]

original post deleted to avoid confusion

[Dking078]

I forget how I did it, as I had a cam code for being a few degrees out of spec upon 1st start.

Pin the flywheel, lock the cam, release the trigger wheel bolt, remove the alignment bolt on the timing cover, get the biggest (thickest?) drill bit that slides in and align. Clean up and start.

Worked for me.

Generally if you are getting the code long AFTER the timing guide job, chances are you did not seat the upper cover enough and now that the rubber is becoming softer, the cover shifts. Which in turn throws the cam sensor even MORE out of alignment and will report false degree angle values out of spec causing the code / vanos shut off.

If the alignment dowel doesn't work (It should) your next bet is to see in INPA or any other good live data reader and see what your angle values are and adjust accordingly. Tons of threads on that one. It's also imperative that you check the trigger wheel tangs are not bent!

[Frankie]

Pin the flywheel, lock the cam, release the trigger wheel bolt, remove the alignment bolt on the timing cover, get the biggest (thickest?) drill bit that slides in and align. Clean up and start.

Very interesting thread.

I have codes P0011 and P0021. Is this similar to "1522"?

[Chedley]

Very interesting thread.

I have codes P0011 and P0021. Is this similar to "1522"?

No. They are mis-timing codes. You have to re time the engine. There are tons of threads on how to do it right.

[Frankie]

So what is "1522"? Is that a P-code?

If so, my E39 Bentley manual for the M62 does not show a P1522. However, my E38 Bentley for M62 between 9/1/98 - 2/28/99 states:


Oil Condition Sensor Permeability Measurement (M62: 'A' Camshaft Position Actuator Bank 2...)

Later model M62s do not show such a P-code.

[JimLev]

So what is "1522"? Is that a P-code?

If so, my E39 Bentley manual for the M62 does not show a P1522. However, my E38 Bentley for M62 between 9/1/98 - 2/28/99 states:


Oil Condition Sensor Permeability Measurement (M62: 'A' Camshaft Position Actuator Bank 2...)

Later model M62s do not show such a P-code.

The Position Actuator would be referring to the vanos solenoid.

- - - Updated - - -


Very interesting thread.

I have codes P0011 and P0021. Is this similar to "1522"?

Timing codes, how many miles on the engine? Have the guides ever been changed or have you recently done any work on the engine?

When you first start the engine the DME tests the vanos solenoids and wiring.
If they fail P0010/12 is set and the testing ends with the vanos disabled.
If they pass the electrical tests the DME checks the timing between the crank and the cams. If it’s off more than +/-10º you get P0011/21. That also will end testing and disable the vanos.
If the first 2 test pass the cams are advanced, the DME looks for the advance, if it doesn’t happen in 4 seconds code P0012/22 is set.


On startup, the system tests the electrical integrity of the vanos solenoid and wiring. If they fail, code P0010/20 is set and the testing ends with both vanos disabled.

If the electrical test passes, then the DME checks the timing between the crank and cams. If more than +/- 10 degrees, code P0011/21 is set, testing ends and the vanos disabled.

If the first two tests pass, the system bumps the intake cams advanced and watches for the change to happen in the allotted time. This time is 4 seconds. If the cams don't budge in 4 sec from the full retard position, a code P0012/22 is set.

[Frankie]

Have the guides ever been changed..?

Yes. VANOS timing is off. I want to know if the procedure suggested here would work in my case.

And I'd still like to know more about "1522". Isn't the OP adjusting the VANOS timing here?

[JimLev]

Frankie, looks like both banks are off. I never use the hole and a drill bit.

The various 540tu vanos codes are:
P0011 cam timing out of spec with vanos off (bank 1)
P0021 cam timing out of spec with vanos off (bank 2)

P0012 cam timing out of spec with vanos on (bank 1)
P0022 cam timing out of spec with vanos on (bank 2)

P0010 Bank 1 Actuator circuit
P0020 Bank 2 Actuator circuit

[Chedley]

Faulting Bank 2 camshaft position sensor. Replace it.

[Chedley]

IF you have access to INPA, could you post the engine statuses, and error codes when the problem occurs ?

[JimLev]

Motuman, 1340 is multiple misfire during start.
It most likely is the cam sensor not reading the correct cam position, could also be a bad connection.
Have you checked to make sure both the sensor and the vanos solenoid connectors are clean, no oil on the pins?
Is the cam sensor a BMW or aftermarket sensor?
Your 0022 code is P0022 cam timing out of spec with vanos on, bank 2

[Chedley]

So, random or sporadic errors -all four codes on - is most likely a loose or wet bad connection problem.
Check the connections/connectors at the DME, and review your recent work on the car. Look for a loose bad ground connection (brown wire).

[Frankie]

OP:

Is your Check-Engine light on? If so, it may be helpful to visit your local Auto Zone or similar for a free fault code readout (instead of referencing Bav Tech software codes). With standard P-codes, we would at least be dealing with common terminology, giving a basis for possible solutions.