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Fault Evaluation
If the vehicle catalyst indicates a lower oxygen storage capability than the model a fault is detected and an internal flag set. If the fault is detected again
during the next driving cycle the MIL is illuminated.
Check of Monitoring Conditions
The monitoring principle is based on the detection of relevant oscillations of the downstream sensor signal during regular lambda control. It is necessary
to check the driving conditions for exceptions where regular lambda control is impossible, for example during fuel cut-off (coasting). During these
exceptions and for a certain period thereafter, the computation of the amplitude values and post-processing is halted, so a distortion of the monitoring
information is avoided.
Fault Evaluation
This is a source reference. Confirm exact model applicability in the original material.