P1278 FORD – Cylinder #8 High To Low Side Open

P1278 FORD Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1278 FORD Possible Causes

Faulty Fuel Injector,Faulty Fuel Injector Interface Module,Fuel Injector harness is open or shorted,Fuel Injector circuit poor electrical connection

P1278 FORD Description

A fault is detected by the fuel injector interface module in the secondary (rearward) fuel injector circuit