On that car...the code means the up-shift delay for catalyst warm-up isn't functioning properly.

ON "cold" mornings tha system is designed to delay (higher RPM) the 2-3 shift.

Most common issue is a vacuum leak in the control system.

Try searching up-shift delay.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator