: 94 Eldo trans code PO56



fuzzie1
11-07-04, 08:55 PM
Ok guys hope you can help. I am pulling a code of PO56 and that is the trans input speed sensor. I have run the tests from the book and the sensor is showing HZ's at the trannie conector and also at the PCM. The trouble I think may be in the PCM. After the car cools all the way down I show more than 5 AC volts. Once it warms up it will throw the code again (after I have cleared it) and the volts drop to 2.3 or so. Any help please.... Also how much is a PCM?
Thanks
Len

Xmugsyx
11-29-04, 10:44 PM
yeh im getting that code in my car but mines throwing it when its cold and when its hot its fine ?? i have no clue