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2014 VW Jetta Hybrid - Does not always start, sets CEL and EPC light on dash

Greetings all, 2014 VW Jetta Hybrid Push to start, buried key, used THAR - VW1 w/EVO-ALL. Checked connections 4 times over, no issues with wiring, I can affirm this vehemently. Vehicle attempts to start, fails randomly. EPC and CEL lights will illuminate on dashboard, DTC P0703 will set for a circuit malfunction. Correct pin and wire color are tapped, as I have checked this vehemently. If you push your foot on the brake and remote start, the DTC will still set. If you start the vehicle normally, the DTC will NOT set, even with everything connected the same. The vehicle will also NOT retry starting once the ignition is on, I'm not sure why this is. It will just sit there for 15 minutes with the ignition on, but no engine on. When this concern initially appeared, I rolled the firmware back a version and this fixed the issue temporarily. I let the vehicle rest overnight and the issue returned next day. Does anyone have any info on this? Please let me know, thank you.

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