Can a bad MAF mess the engine or transmission up?

Hello, a Mass Air Flow sensor that is not reading properly can influence fuel and air mixture ratios, causing too much or too little of each, affecting power and engine performance accordingly. However, it will not cause or influence a shifting problem directly. Only in the fact that the vehicle does not get enough speed to warrant 5th gear would lack of shifting be a factor. Either way, electronic transmission and engine performance testing should occur to see what's going on so it can be resolved. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops