Pcm is not saving the monitors on 1998 Ford Ranger

my truck can`t pass smog inspection due to 5 incomplete monitors finally complete all cycles and I turn engine off and the monitors there gone, is like memory on the CPM is no good. any suggestions on what the problem could be will be appreciated.

by in Morgan Hill, CA on April 11, 2014
2 answers 3 comments
ANSWER by on April 11, 2014
COMMENT by on April 11, 2014
Thank you I will check it out, I will keep you posted
ANSWER by on April 11, 2014
Does the radio lose preset's and clock lose time when key is switched off?? P1000 code???
COMMENT by on April 14, 2014
No Codes ,and its not the original radio anymore.
COMMENT by on April 14, 2014
P1000 is Ford's code for monitors incomplete!! Have it scan tested with a professional scanner! Not just a code reader hooked up....Now does anything else lose memory when the key is switched off.??? Stereo, clock etc...?

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