No power on cold start, possible codes?

[blaqturkey]

Spent the weekend on my uncle's farm and his 2014 Valtra N123 (stage IIIb model) has been giving him a headache for a while now, when we first start it up, it's got very little power so it'll crank and fire up okay, but it's sluggish for the first several minutes and barely moves under load, and even the throttle response appears to also be weak. Once it's warmed up, it runs almost like normal. I'm not seeing any warning lights on the dash, but he said he did notice the ECU flashed a brief E411 code right after startup last week, and once it threw F106 during a cold idle, but both disappeared quickly and we don't have a diagnostic tool to read stored faults, so we're kinda flying a bit blind here, other check on the fuel and battery have been done but it still just feels like the engine is not getting enough fuel or the timing is way off until it warms up

Appreciate any insights for us

 

[PatTraxxx]

A 2014 Valtra N123 with those symptoms sounds like a sensor or a fuel system component that's not quite happy until it reaches operating temperature.
The E411 and F106 codes point to something in the engine management, possibly related to fuel pressure/delivery or a temperature sensor giving incorrect readings when cold.
It could be anything from a sticking fuel pressure relief valve to a faulty engine temperature sensor or even a sluggish exhaust gas recirculation valve.
Since it smooths out when warm, that strongly suggests a component that's either electrically or mechanically affected by temperature.
If possible, get it hooked up to Valtra's diagnostic software while it's still cold, as those brief codes are trying to tell you something important about what's happening during startup!

 

[Dave Dave]

These Stage IIIb emissions systems have made tractors worse, not better. We've traded reliability and cold-start performance for regulation-friendly electronics that barely work right unless conditions are perfect and that's not how farms run.