335i SES codes


Dec 21, 2016
hello everyone, I've been searching around the Facebook page and google to try and get this question answered but I haven't came up with anything. My car throws a 2a12 DMTL diagnosis module tank leakage, and two inactive codes which are 29F4 and 29F5 for catalytic conversion. The car runs fine with these codes and once reset they don't come back on for a few weeks and only ever on start up.

The mods are as follows
Inlets, downpipes, 7" intercooler, CP BOV, and filters. Currently running a stage 2+ OTS tune.

Thank you for the help