2004 Ford F-150 Heritage XL 6 Cyl 4.2L
I can't get my code reader to communicate
I have a service engine light on and my truck runs rough when I stop and I can't get my code scanner to communicate.
Try another code scanner - perhaps at any local auto parts stores; Advance Auto, Auto Zone - they will read the OBD system for free. Also, If you check your owners manual, you'll see that fuse #42 is assigned to the OBD and lighter.