I don't know how the aftermarket code readers work, but on the factory scan tools you may not get trans codes in the engine codes. It is a separate system. If the MIL is on there is a code, you just need to find the correct system to read it.


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.