could the code 1151 be caused by having too much oil in the motor? I know it is for the B2S1 HO2 points toward lean.
Rolling-Thunder said:Well, it does mention cam timimg as one of the possible causes.
Guess your best bet is to check the connector for the cam sensor too.
If any of them look corroded, just spray them with some electronic contact cleaner, and after they dry, put a little dielectric grease on them.