hi all took my 1.6 stilo to the garden cent this morning. as the memsaab wanted some plants. drove grate there but when i started it to come home. on tick over it started to go up & down then the engine light came on & the car went in to limp mode. and would not go over 40 got home put the code reader on it and it came up with P1121. can any body help me with this please & point me in the right direction. ive cleared it and took it for a quick drive round the block seems ok now