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The purpose of the diagnostic function is to monitor and control the engine and EATS, as well as to protect components from damage.
If a malfunction is detected the diagnostic function informs of the occurred fault in the form of a fault code. The fault code provides guidance when fault tracing. All fault codes and fault messages can be found in the Fault Code Register.
The operator is warned that there is a malfunction via the instruments. Depending on the instrumentation in use, the fault message is shown in various ways. Fault codes can also be read out by the Volvo Penta diag- nostic tool.
Depending on the severity of the fault, the diagnostic function will take various actions to protect the engine (e.g. torque derate, idle speed only, engine shut down etc. )