Freestar V6-4.2L VIN 2 (2004)
P0500 - P0504: Testing and Inspection
P0503
For diagnosis of code P0503 refer to chart
P0463-P0503
NOTE 6: Go to Transmission Control Systems. See: Powertrain Management/Transmission Control Systems/Testing and Inspection
If there is no link in the chart then:
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This code is not a valid code for this vehicle