cheap sensor, get a genuine gm one. seen similar faults before using patern parts.
cost of genuine sensor will not be as bad as you think from likes of autovaux or lmf Vauxhall.

hi all
right here goes i have a corsa automatic 1.4 16v 2002 comfort, it has gone in to limp mode and only rev at 3800 revs, comes up with codes
p1550 limp home mode,
p1220 throttle position sensor voltage low
and
p0340 cam sensor problem
the first two have been sorted after finding a broken wire just up under the dash wire repaired and codes cleared
as for the cam sensor problem all codes cleared and fitted a new sensor, none gen from a local motorfacters
and now the car dont start am using the op-com obd11 reader equipment ,
have checked the timing and found spot on only starts and stops and pops back through throttle body so fitted old sensor back on and engine starts and runs to 3800rpm any ideas would be helpful
cheers john:mad::facepalm::boggle: