No reading from the OBD-2 on 2004 Ford Taurus

The OBD-2 has detected a malfunction, but the scan tool can't get a reading. What may cause this?

by in Ukiah, CA on January 18, 2011
1 answer 1 comment
ANSWER by on January 18, 2011
I assume your light is on. if there is no power to the scan tool, there is a fuse that provides power to the obdII connector. it is usually the cigar lighter fuse. if it does have power and cannot communicate then there is a module that is pulling the system to ground and must be diaged by a shop. Roy
COMMENT by on January 20, 2011
Thanks Roy. As you said the fuse to the cigar lighter was out and after replacing it, I was able to get a reading.
Related Items:
I bought this car used about 2 weeks ago from a private party. After driving it for I while I have noticed that occasionally it finds the P0171 code when starting. I estimate it finds the code in a...