CLAAS 773Bh: Fault Code 773Bh - Check Cooling Circuit and Sensor

The fault code indicates a potential issue with the cooling circuit or the cooled exhaust gas temperature sensor (B221). The fault may be caused by a short-circuit or poor condition in the harness and its connectors.

1. 1

   The harness and its connectors

2. 2

   The general condition of the cooling circuit

3. 3

   The cooled exhaust gas temperature sensor (B221)

1. 1

   Inspect

   Inspect the harness and its connectors for damage, wear, or poor connections.

2. 2

   Examine

   Examine the general condition of the cooling circuit for leaks, blockages, or physical damage.

3. 3

   Test

   Test the cooled exhaust gas temperature sensor (B221) for proper function and connection.