TSBs

Diesel Exhaust Fluid Level Always Shows Full

Oct. 18, 2022

Some 2017-2018 Ford F-Super Duty trucks equipped with a 6.7L diesel engine may exhibit a concern where the DEF level indicator appears to be stuck in the full position.

Information courtesy of Mitchell 1

Mike Mavrigian

Some 2017-2018 Ford F-Super Duty trucks equipped with a 6.7L diesel engine may exhibit a concern where the DEF level indicator appears to be stuck in the full position.

The fix involves updating/reprogramming the PCM using the latest level.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

About the Author

Mike Mavrigian | Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.