I am having the same problem and am needing help figuring out the error codes. I did what Servicer mentioned to obtain the error codes but can't figure out what it means. Below is what I got
doing P:01
E:09 C:03
E:20 C:01
D:06 C:01
D:11 C:01
D:10 C:01
D:08 C:01

doing
P:04 E:02

Anyone who can point me to the error code table or be able to interpret it is much appreciated. Thanks.

I have a Bosch nexxt 500 series

Yes I did,. I had to change the motor board similar to what the other guy did. But first check the error codes
What you can do is put
it into a service mode to check for error codes. I'll post the directions below:
4/18/2009 Bosch FL wont spin or agitate - Appli…
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1)With unit turned off, press and hold the two buttons to the left of the knob, (Spin Select and Delay - I
think)
2)While holding those buttons, rotate the knob one to the left (Perm. Press Cold)
3)Keep holding the buttons until the display shows a P:01
Now, the way Bosch's test program works is the P:XX is the specific test, and pressing "Start/Pause" will
start that test.
The tests I can recall are as follows:
P:01 - Error Code Recall
p:04 - Spin Test
P:13 - Water Valve(s) Test
P:15 - Drain Test
There are others, but these are the one's I used most ofter, therefor remember.
P:01 - Pressing start will show you an E:01 / C:0X
What this means is the E:XX is the error code and the C:XX indicates the number of times the code has
shown up in the last 8 cycles. Using the spin select button will allow you to scroll through all 24 of the
control errors as well as the motor codes, which are D:XX codes.
So, for example, if you see an E:21 / C:03 this means you unit felt there was too much foam (soap) inside
the unit,
P:04 - Pressing start will cause the door to lock, the drain to kick it and (hopefully) the unit to agitate and go
into a full speed spin. You may see an error code pop up at this point if the unit fails to spin.
P:13 Pressing starts the filling of the bleach cup. Press it a second time and the soap cup will fill with cold
water. Once more and it fills the fabric softener cup. Finally, pressing it a fourth time will fill the soap cup
with hot water. Hitting the spin select will cancel this test.
P:15 Press start and it drains.
So, using the directions above check for error codes and run a spin test. Post up your results and I'll see
what I can make of it.

I did spin test. When I put [FONT='Verdana','sans-serif']P:04 and pressed start - the door was locked, it start drain but the unit did not agitate and did not spin. There is an error code E20. What does it mean?[/FONT]
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Hi,

my Bosch washer does not spin. I ran diagnostic test and it gives error code F20.
Is anybody knows what F20 means?
Thanks,
Sasha.

Repairmen just checked my washer and he said that I have to replace Drive Motor Control Board. The price would $410. Ooops. I talked to Bosch they said if I buy from them it will cost $206.90 + tax. I am going to check it tonight if I can locate the problem without replacing the whole unit.
Sasha.