Hi all i did an air filter change this morning and then forgot to plug the cable to the sensor in the air pipe. Had a drive and noticed a little less umph than normal. Oops i remebered the cable as i was pulling up i noticed the engine light ( the orange one ) had illuminated so i thought as soon as i plug in the lead it will go off. Guess what car drives like normal but the light is still on. Is this a warning that a fault occured or is there still a fault? Anybody had similar? By the way the air filter was black and horrid.