Ranger 2WD L4-2.3L VIN D (2001)
P1635 - P1639: Testing and Inspection
P1639
For diagnosis of code P1639 refer to chart
P1518 - P1781
NOTE 11: The vehicle ID block (VID) needs to be reprogrammed. Refer to Flash VID Block procedure, See: Powertrain Management/Computers
and Control Systems/Testing and Inspection/Programming and Relearning