NTB18-037

2016 TITAN XD; MIL ON WITH DTC P0420 IF YOU CONFIRM The MIL is ?ON? with DTC P0420 (Catalyst System Efficiency Below Threshhold Bank 1), AND There are no drivability issues. ACTION 1. Save Computer Data with CONSULT-III plus (C-III plus). 2. At step 6 of the reprogramming procedure, confirm this bulletin applies to the vehicle you are working on. 3. If this bulletin applies, continue with reprogramming. 4. Write Saved Data with C-III plus.