ECM/PCM 'A'

[Delexiz]

Hi I own a 2008 V6, 3.0l, 6 speed ford fusion. my check engine light is on and the anti theft security light keeps flashing while the car is parked whether the key is in the key lock or not.                                                      So I did an OBD diagnosis and these codes appeared V0100 and P0446. I tried to clear them but the V0100 did not clear.                           Now this V0100,  lost of communication, ECM/PCM 'A' appears.                                                    WHAT SHOULD I DO? DO I NEED TO REPLACE THE PCM OR WHAT? PLEASE HELP. GOD BLESS YOU.

Edited October 8, 2017 by Delexiz
I forget to describe my car.

[eGuru]

The anti theft security light will flash whether the key is the ignition switch or not. PATS only "reads" the RFID tag in the key when the switch is in the Run position.

 

Any number of modules could be causing the CANbus error - including the TCM.

 

 

[drolds1]

Site Feedback and Help is for questions about using the site itself, not for discussion about the Fusion.  The forum is arranged by specific areas for discussion of that particular aspect.

 

WRT your codes, there are no OBDII codes that begin with 'V.'  I think you meant U0100.  There are previous discussions here about that code.  Before posting a question,  please use the search function to see if your question has come up before.  This way, we avoid having to answer the same question over again and end up with duplicate threads.  For example, see here.

 

Code 0446 is an evap. system code and that's discussed here as well.  It's a fairly common problem with the Fusion and is probably caused by a stuck purge valve.  Again, use 'Search' for help.

 

This thread is now locked, as it duplicates existing topics.  For any further discussion of your issues, please post in the appropriate forums.