1d.2.1a — Fendt

While Fendt diagnostic codes typically follow a format like 00.0.00 (e.g., 15.1.67 ), the string is not a standard, publicly documented fault code. It may instead refer to:

Fendt 933 tractor EDC 1D. ... Fendt 933 tractor may show unknown EDC error codes causing operational interruptions. The EDC 1D. 1. JustAnswer Farm like never before. - Fendt fendt 1d.2.1a