Insite Help exhaust (SCR/DEF) service required

[feltup]

from what i have seen code 3568 is generally a failed doser. nox code is the sensor its self. cummins eds has you check for a few other codes if not present then replace sensor. if those are the only 2 codes you have i would replace both pieces.

could could try a after treatment pump override test. you need to remove the after treatment def injector to run the test. it will let you check spray pattern and measure the output. i have had many dosers check in spec but still need replaced.