E 150 V8-4.6L SOHC VIN W (2004)
P1275 - P1279: Testing and Inspection
P1278
OBD II - Base Gasoline
For diagnosis of code P1278 refer to chart
P1151-P1309
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