Touran 2.0 CNG ME7.1.1 second lambda, cat off

[tech_cz]

Hi,
can anyone help with decat in this ECU ?

0 261 S05 953,
06G 906 022 Q
80kW

Fault codes :
P0420 - 001056 - Catalyst System, Bank 1 - Efficiency below threshold.

Thank you in advance, Marek

398026

[nizarben]

try this and report
398154