EEC error code 157 and 158 ?

[jongilchrist]

I just ran a code check and the two following codes came up

157 - Mass Air Flow Sensor below minimum voltage
and
157 - Mass Air Flow Sensor above maximum voltage

I have no clue what to do to fix this error.

Do I have to change out the sensor it self or is there something else it could be?


Any help will be greatly appreciated.

[billveith]

I replaced it on my 94 4.0. It is on the air cleaner snout and only two screws. Whne mine failed the engine pinged and was short on power.

[Jplayer]

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,