Problem: The vehicle came to the shop with the MIL on. The engine seemed to run normally.
Details: The bulletin stated to connect a scan tool and pull codes from all modules. If any of the following DTCs are present, check for signs of DFE contamination: P20EE, P2BA9, P20E8 or P20E9.
The technician connected a scan tool and pulled DTC, P20EE. He inspected the Diesel Emission Fluid (DEF) fluid and it looked good, but he replaced the fluid anyway, using new DEF fluid in from a sealed bottle. There was still no difference.
An ALLDATA Tech-Assist consultant suggested that the technician check the DEF injector for signs of contamination based on a factory TSB he found in ALLDATA (TSB #25-003-15). It appears that the DEF system on Grand Cherokees with a 3.0L Turbo Diesel engine, built on July 10, 2015 to July 11, 2015 and vehicles built on August 24, 2015 to August 25, 2015, may have been contaminated during manufacturing.
NOTE: Based on the vehicle’s VIN, additional replacement parts are suggested. Please review the full TSB in ALLDATA Repair.
Confirmed Repair: The technician checked the DEF injector and it was full of limestone deposits. He was able to clean the injector and reinstall it. After clearing the DTC and test driving the vehicle, the MIL remained off and did not return.