CLAAS 774Bh – Claas Eng A15 Engine Module: Crankshaft Position Signal Invalid

The crankshaft position signal is not in the correct format, causing the engine module to reduce engine power by 20% per minute until it reaches 50% of its nominal power. Power recovery occurs at 20% per minute once the signal is restored.

1. 1

   The crankshaft position sensor (B231)

2. 2

   The engine module ENG (A15)