Real Fixes from SureTrack® provides expert-based knowledge captured from millions of documented repairs and community discussions. Read on to see how SureTrack can help you fix tricky issues, like this 2019 Ford F-550, that are not easily diagnosed with OEM information alone. SureTrack is available at no additional cost within ProDemand®.
Vehicle
2019 Ford F-550 Super Duty XL 6.7L Eng VIN T Eng CD 99T
Title
CODES 1555 and p1557
Complaint
Check Engine Light ON, for Injector 5 and 7 Circuit Fault. Runs fine
Cause
Truck only has 5000 miles on it. Ford has replaced 4 injectors and the PCM already at 2500 miles. CYL 5 injector is original yet but 7 they replaced. When the Truck is cold all injectors show the same resistance reading. Once the truck is warmed up 5 and 7 resistance goes high. others all stay the same. I tested at the PCM and directly at the injector and got the same high reading. Truck runs perfect even after it sets those codes.
Correction
Replaced two new injectors in and problem was solved.
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