New to this site, Have a problem : My 2000 bonneville ssei has a ses light on after diconnectiing battery..Codes retived are: P0341 Camshaft Position ,P0243 Supercharger Boost Solenoid Control Circuit ..I replaced the camshaft position sensor reset code still getting error p0341 so replaced crankshaft sensor with no success. I had a mechanic diagnose the problem by checking ohms voltage to all connectors everything checks good with specs..he even checked to see if the cam magnet interruptor was there, it looked in good shape.. does anyone know what the problem could be? i've changed the cam sensor 3 times already can not figure it out.

I'd need to look up the normal factory service manual diagnostics to go much further. I know for starters they'd have you checking the wiring etc for rubs and things..ohming the wires would usually show those issues.

Why was the battery disconnected? Was there some other work being done? Trying to correlate why disconnecting the battery under the back seat would give you trouble up in the engine.

How about a poor connection ? We've seen poor connections do even worse. Like P0171

I was wondering about that too, Bill. That'* why I wanted to find out if any other work was done, as the battery was disconnected for some reason, before heading that direction.

But, RodBonneville you may want to check the battery connections both ends, and the under hood positive connection to the fuse box. Remove where the grounding strap from the battery connects to the body under the seat. Clean up the bolt, and the treads in the body as well as you can. You may want to scratch a little paint off where the strap connects, and add a star washer to bite in better. Goop it all up with dielectric grease when you reinstall.

Please remove the sensor and rotate the engine around by hand. Make sure the little dinky magnet (it'* square) is still in the plastic retainer. You state your mechanic verified it'* there, but some people see the retainer, think that'* the magnet, and look no further. The little magnet can still be missing.

Reason why battery was disconnected...
the car shut off while I was driving I pulled to the side and tried starting it again with no response not even a crank..did notice while turning the key on position the lights on the dic were distorted so I pressed the buttons to see the battery volts saw something saying service soon but not sure distorted...I waited a while then the car started with no problem no ses light on dash..when I arrived home I decided to disconnect check the battery terminals to see if they were loose or corroded tighten them and as soon as I started the car ses light turned on.

Do you mean poor connection from battery?
I tightened the battery cables as hard as I could.. the mechanic did check all the wires from connector to module and from module to computer with ohms and volt going thru..he even ordered a new module to test drive and same error codes came back.

Archon will do... Another thing I should mention is after replacing the cam, crank sensor with no success I went back to the back seat battery to retrace my steps I saw a wire disconnected! I thought there'* my problem..connected the wire again did not rid the codes..do you have any idea what the wire is for? It a harness that comes out from fuse box and connects to a black square held by I believe 3 screws on to the body frame on passengers side.

yes the mechanic did check..I checked with him and felt that I could turn the magnet with my fingers..so he even went as far as ordering the magnet and cam gear just to compare.. the magnet looked the same...The fitting was the same, it just goes in from behind with nothing stopping it from turning..he also put a piece of metal to the new magnet to see if it sticks, it did.
then he put that same piece of metal through the cam sensor hole were the magnet was visible it also stuck