Persistent Check Engine Light and Misfire Errors P0300 & P0301 on 2004 Opel Astra G Z16XEP

Hello, the problem concerns the Opel Astra G 2004 1.6 16V 103 KM Z16XEP engine, the check egine light came on, connecting to the computer showed the following errors;
P0300 - Multiple misfires detected in cylinders.
P0301 - cylinder first misfire detected
OPEL TECH2
The first thing I did, replacing the candles with new ones ... nothing helped after deleting the errors and driving a few kilometers again, the light came on, the same errors appeared ... while driving, there was also a situation where the light started flashing when adding gas. It was advised to replace ignition coil so I did.
The effect is the same after driving a few km, the indicator comes on again, the error reading is the same again ... I will add that the car in neutral (idling) does not work perfectly as if a gentle jerk, but the revs do not jump ... someone has any suggestions

Hello, you have a damaged engine controller. Connections in the controller are damaged. To be sure, take a picture of the engine controller. The engine control unit is located from the gearbox near the engine manifold.

Hello, do the symptoms occur regardless of the engine temperature?

On a cold engine when the choke is normal, this rough operation begins when the engine warms up.

What will I know after taking pictures of the driver?

This is what is happening. I've repaired these drivers a couple of times. One gentleman bought new candles and three new coils and it was the same, I got the driver and it was damaged for an hour and repaired.

Hello, what are the costs of repairing such a driver?

The cost is PLN 100, max PLN 150

Thank you for your help, tomorrow I will look for someone in the area to repair drivers.

I will ask again what will I get from taking photos of the driver?

Where are you from, you can ask

Added after 50 [seconds]:

I wanted to see the driver numbers

Tychy, Silesian voivodeship :)

Added after 53 [seconds]:

Ok tomorrow I will take a picture of the driver and post it on the forum

Ok do, I'm waiting

Added after 7 [minutes]:

Yes you may have corrupt drivers

Will this driver disassemble himself or do you have to drive to the workshop?

You can do it on your own

I took pictures of it here?
Delphi Delco driver

I only warn you against trying to repair this driver yourself. Irreversible problems and damages may begin at the stage of trying to remove the lid. I will not mention soldering if you are not experienced. You will destroy the pads, making the repair much more expensive, if still possible.

I absolutely do not intend to repair this driver myself, because I have no idea about it, on the contrary I am looking for a suitable workshop, but I can see that there is only one in Tychy.
Returning to the merits, in order to diagnose the problem 100%, you need to go to an electromechanic ??

Yes, it is. You can repair the driver by shipment. I only doubt the colleague's valuation above. Rather, you will pay 100 zlotys more.

I called the workshop in Reda, they said that they would not fix it by mail and the costs are around 700 PLN

If you want a reference for a workshop dealing with regeneration by mail order, which I use, I will send you a contact at PW

Hello, the car delivered to the garage today, we'll see what defect they find ..... in the meantime I got something like that would interest someone;
http://www.obd-codes.com/p0300

Hello, car picked up from the workshop The reason was a damaged coil and a frayed camshaft sensor cable ...... Only the second coil turned out to be good

Unfortunately, the failure has returned, there is still a misfire .... sent to the garage, they stated that the fuel was to blame (it was supposed to be of poor quality), which of course turned out to be not true ..... because the 98 refueled did not change anything.
I gave the car to another specialist who checked the following things, catalyst, candles, coil, injections, exhaust and many other things, lambda probe, etc., with which he had experience with such a defect ... it is definitely not a computer driver.
The error pops up only at low revs, i.e. during aggressive fast driving, nothing happens, the fault arises during gentle driving at low revs, the ignition falls out ... I also suspect the timing belt or its tensioner, but these are just assumptions ... you can say that I am in kaczy d .... and aha, all the pistons have good pressure, the candles are dry ....

Maybe the description is not perfect, but everything that I received during the phone call is the EGR valve turned off, which also has no effect on the defect, someone has any suggestions as to what could possibly be the cause of the failure .....

Hello.
I have the same engine on the Astra H.
I bought it in December and it is still standing in the workshop with the same symptoms, i.e. random misfire. The first time, all of them in a moment, etc ...

Coil replaced with the original, injections measured, new candles. Without result.
I returned the computer to Katowice on Krzemienna Street. They say it's good. I'm picking it up today.

If I put the computer back in the car, I will replace the relays, I will clean the fuses because I did not do it.

Don't you have the impression that the check lights up and starts working unevenly when hitting a hole or some drastic unevenness?

I did not notice that the hole or unevenness was the cause of this, but I will check ... but it definitely happens at low speed ..

How much did you pay to check the computer?

The roads of Mysłowice are one big hole, so there is some correctness in my opinion.
I confirm that an error pops up on slow driving and starts to jolt.
On the highway to Kc, I chased him away properly and nothing.
The mechanic sat down and sharply a few kilometers - nothing.

After it is over, I quietly drive home and puff. There is a bug and three gags.

I took the computer back to the mechanic. We agreed that he would try to replace the coil again (with a different one than before).

I paid PLN 50 for checking the driver, but I'm skeptical about the diagnosis.
It turns out that they have opened, reviewed for cold solders and everything.
They ordered to drive up with the car and did not close the driver box because you will have to open anyway .... What's the point in that?

So the same as with me, an error pops up at low speed.

I don't know if this will add anything to the discussion, but my son also had the same problem with this engine only in the Meriva. After warming up while driving slowly, the error "misfiring on all cylinders" popped up. The son blinded the EGR, but partially, with a plug with a small hole. It helped for him.

RS07, write, please, if the check lighted up and an error popped up, it "flapped" the engine and lost power? As if he was only riding three garages.

Hello, the car is picked up and so far it flies nicely, ultimately the cause of the misfire turned out to be EGR.