help with this engine code p0011

[scottd1975]

p0011 what does it really mean what should i look for? its on a friends mk3 2.0.

[ncttrnl]

Timing over advanced. If you use a vag you might get more information.

Has anything recently been done to the car?

[scottd1975]

they changes the timing belt and did a tune up here is more info

i was thinking about changing cam position sensor, the engine runs good, how bad do u think this problem that i have?
here is what the scanner says whenever i scann it.

"A" camshaft position-timing over advanced
or system performance-bank 1
evaluation
open or short circuit condition
probable causes
1-poor electrical connection
2-failed camshaft actuator-resistance 10-20 ohms
3-blocked oil passage

[gtintense]

bank one means that its the first sensor they usually go from left to right

[mike]

if they just did your T-Belt, that means they probably got it a tooth off, you can either take the T-Belt back off and reset it, or take the 13MM out of the distributor hold down, pull the pins on the distributor that hold it in place by the bolt, and turn it while the engine is running a hair either direction until the light goes out. thats the hack way, but works none the less.