F 150 4WD Pickup V8-5.4L VIN V Flex Fuel (2006)
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P1405 - P1409: Testing and Inspection
P1406
For diagnosis of code P1406, refer to chart:
P1406 (Part 1)
P1406 (Part 2)
If there is no link in the chart then:
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This code is not a valid code for this vehicle
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Or information published by the manufacturer for this vehicle did not include this code
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For complete diagnosis of the system, follow this link:See: Powertrain Management/Computers and Control Systems/Testing and Inspection