billvieth is correct
i'm getting the same codes
i tried cleaning the sensor wires on the sensor and plug and got rid of the high voltage code 158 but the code 157 stuck around.
So i guess it's off to the parts house.
one important thing to know about the 2 screws on that little puppy though. They are tamper proof torx screws. What i mean by tamper proof is they are in the shape of the torx bit but they have a tit in the middle of the hole so it won't take a normal torx bit screwdriver or socket to remove them.
Just thought i'd throw that in to save someone some trouble in the future
Laterz,