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We have an OHF issue on VW3A7257 AFE. When we run the AFE, the AFE load % shoot up from 0-160% in less than 20s (AFE tripped at 117% on OHF) and the current load is 2-5% only. What will be the reason.

The AFE sounds normal and also the load of 2 … 5% is OK.
The root cause for the rapid increase of the thermal load seems to be a defective sensor. The service engineer should check the ohm value of the sensors. In cold condition (30°C) it must have approximately 5kOhm.
The spare part number of sensor is VZ3G1104 (3pcs. per device).
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