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2003
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Expedition 2WD V8-5.4L SOHC VIN L
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Repair and Diagnosis
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Transmission and Drivetrain
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Automatic Transmission/Transaxle
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Testing and Inspection
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Diagnostic Trouble Code Descriptions
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4R100
4R100
Carry Out On-Board Diagnostics (KOEO, KOER)
After a road test, with the vehicle warm and before disconnecting any connectors. carry out the Quick Test using the scan tool.