Hell all, looking for some input on this KDL issue that I have not seen. Before I arrived, I was told there was an issue with the UPS and it was replaced. Now the car sits idle with no faults but the PI shows out of service. The car will run on inspect and fire service. Display parameter 4, 1 = 10 which is OSS. Just wondering if any of you guys have seen anything like this?

Thanks in advance for any info!