Error 17678, 17672, 17675, 17669, unit injector exceeded limit

Hello, I have a question, can someone advise me.
Auro vw passat 1.9 2001 74kw 101km
My brother mentioned in passat b4 1.9 year 2001 74kw 101km pump injectors four pieces because they fell into him.
After replacement after a few days after firing it has such a problem with the accelerator pedal not responding for a few seconds. Sometimes the reaction is immediate and sometimes it is always. After that, everything ok. I connected him to a Polish vag computer and there mistakes.
17678, 17672, 17675, 17669, all unit injectors exceeded control limit no accessories / not related to equipment - sporadic error

After resetting the error returns after driving about 100km

Someone can advise what are these errors cause or fault it is unit injectors bought used maybe not from this engine up to 101kw
Or was the mechanic incorrectly set to 180 degrees

You can ask for your help because, as it is the fault of the pump injectors, it has a two-week warranty on them

marewe2 wrote:

bought used

He bought another dustbin. Pads and elastics, of course new?

Hello, yes, all erasers are new. We just want to know if the bad mechanic is set to 180 degrees because from what we read it sets to 120 180 220 degrees
Or maybe these pump injectors are already worn out because if so, the brother has time to give them back

Hello, today again after firing, no reaction to the accelerator only after a while everything is OK
What could it be or the fault of these injections