Here are some info on dtc 41 and 42.
It is triggered during cranking when the voltage on the line exceed 4.6 volts. Normal value is between 0.5 to 4.5 volts.
On the calibration you can disable dtc 42.
For DTc 41 you can only raise the voltage threshold. It is located at byte_12037. It is set at 4.6volts. Raising it to Max value will likely disable DTC 41.
I still can`t be sure, does the PCM provides power or ground path on the IC line?
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