Solution Date: 9/10/2024 Serial Number Break: JB00042912, 242280043-242280242
Problem: Fault code 19077 active after replacing DEF supply module
Root Cause: Factory is investigating the root cause.
Solution: It is mandatory to replace any black flow nozzles with white, core backflow nozzles to reduce potential DEF Supply Module failure. The Knowledge Article KA ID: KA000006410 references instructions for troubleshooting fault codes 19077 or 4334-10 on new or Reman supply modules and replacement instructions.
Solution Date: 12/1/2022 Serial Number Break: 223360001
Problem: Engine can derate and go into limp mode or show Fault Codes 19077, 193337
Root Cause: The flutter membrane in the older version modules would harden and not operate properly in below freezing temperatures.
Solution: The 2.2+ modules were upgraded with a new flutter membrane design and material composition that will prevent flow restrictions.
Flutter membrane – New version
Flutter membrane- Old version