I want to thank you for your detailed information on these codes. I am not the one that posted, but, have a Clark C25 that has had number of codes before and we had to replace coil, oxy sensor, FTV and paid Equipment Depot to install the latest software.
Unfortunately they then found out that the SECM has to have a resistor in it or the electrical system will trigger codes.
I'll troubleshoot my code 73 with your information.
Have a great day and thanks again.
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