hi - i'm back again.
just wondering is there is anyone out there that knows hows to troubleshoot this problem of 09 error (noisy cyp sendor). it seems most of the responses are just guesses - try replacing this, if that doesn't work replace that ,etc. I measured the resistance of the sensor and it checks out ok. if the code says noisy, i'm thinking that i should be able to connect a scope (i've got one) and see if there really is noise and try to correct that. does anyone know what these sensor signals should look like on a scope?