I searched around on this forum a lot, but I haven't found a concrete answer to this. So, I'm working on a huracan tune using DS1 and the provided TunerPro XDF. I see the DTC Codes and DTC Masks tables. I see that Masks says to set to FFFF to disable. So, I'm assuming that the one table gives you the ID of the code be decoding the hex somehow. The description of that table is the following:

[DTC] DTC codes (high 2 bits = PCBU prefix)

So, do I just need to figure out which cell the code(s) i wish to disable are and then mark FFFF in the other table in the corresponding cell? And how do I go about decoding them? The most obvious codes I would be looking for are P0420 and P0430 for catless/offroad application. Any advice/guidance here would be appreciated. Neither table has axis labels at all. They're both 45 rows by 32 columns. So, I'm guessing they just mirror each other and you use the masks table as switches to turn the codes on or off (and different MIL settings like first error, second error, etc). I just can't figure out how to read the codes table to know which ones I need to switch. Please help!

They do have both a 'user guide' (which provides information on actually setting up the unit and flashing calibrations) and a 'starting guide', which provides a lot of basic tuning information (mostly focused on DAZA, less on V10). However, they explicitly mention that changing downpipes (in the DAZA context) will produce fault codes, and they cannot engage in a discussion related to bypassing emissions systems. That said, not all DTCs are emissions-related, so I don't know why they shy away from that discussion completely.

This is helpful! So it's the 2 highest bits for the component group and then the remaining 14 bits are the code number? Does it work the typical way where 00 corresponds to 'P' for Powertrain, 01 to 'C' for Chassis, 10 to 'B' for Body, and 11 to 'U' for Network-related issues? Just trying to understand how to interpret this so if I see a Chassis or Body code, I'd know how to find it. I don't anticipate needing to disable any of those, but I just wanted to make sure I understood the table.

The approach I was going to take was to copy both tables into excel sheets, so that I could edit the corresponding cell in the Masks file if I need to disable a code. Then, I can just copy the table body back in.

the best advice would be: search for CDKATSP, FHOKH and cut it out proper way

as for the dtc table, ive got this for 17.1.25 idk if it helps