Over timing retarded sensor location

There is no single sensor for the timing. it is computer controlled using the camshaft and crankshaft sensors along with engine rpm and knock sensors.

What is the issue you have or code you are seeing? That may lead to a better answer.

It is throwing codes p0011
P0016
P0018
P0021.
So both camshaft n the crankshaft but than 21 is timing over advanced. That's the one I was looking for

Well with those codes the problem isn't in any of the sensors, The sensors are working and telling the computer that there is a problem with the cam/crank timing. Basically the timing chains have stretched and that is changing the cam/crank timing enough to cause a problem. This is common with the newer multi chain engines because they use smaller chain. To repair it requires replacing the timing chains, tensioners and guides.