CLAAS 773Bh – Claas Eng A15 Engine Module: Temperature of cooled exhaust gases slightly high

The temperature of cooled exhaust gases is slightly high, causing the engine calculator to reduce engine power to 95% of its nominal power. The power recovers at a rate of 5% per minute. This issue may be caused by a problem with the cooled exhaust gas temperature sensor or the cooling circuit.

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)

4. 4

   A possible short-circuit

1. 1

   Inspect

   Check the harness and its connectors for damage, corrosion, or poor connections.

2. 2

   Inspect

   Examine the general condition of the cooling circuit for leaks, blockages, or other issues.

3. 3

   Test

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

4. 4

   Inspect

   Look for signs of a possible short-circuit in the affected circuit.