In 1932, the Deutsche Reichsbahn tried to raise boiler overpressures from 156.9 to 245.1 N/cm2 (227.6 to 355.5 psi) by using high-tensile steel.

The coal consumption based on the effective power at the coupling hook, was 0.96 kg/PSh compared with 1.13 kg/PSh on the 03.

[1] The medium-pressure boilers did not prove to be stable, and after a short time damage occurred to the firebox.

Since the locomotives did not meet expectations even after modifications and repairs, the permissible boiler overpressure was finally reduced to 20 atmospheres in 1935 and they were added to the operating portfolio with the company numbers 02 101 and 02 102.

Due to a lack of water, the boiler of 02 101 exploded on 3 April 1939,[2] whereupon both engines were decommissioned and were scrapped in 1940.