Concerns with the V Class OM654's DPF, SCR, Adblue, and EGR Engines

[tobiasek]

Greetings everyone, On the way home from purchasing a 2019 V class with an OM654 engine 2.0 diesel, I noticed that the EML light had come on.

These issues surfaced after some driving around:
The DPF's efficiency is insufficient (P3007B9).
Warning: EGR positioner (low pressure) flow rate is too low (P300A7A).
With the 'SCR catalytic converter' component, the efficiency is insufficient (P30064C).
The 'SCR Catalytic converter' component does not have enough efficiency (P30067F). A signal is being sent that is lower than the allowable limit value.
The Adblue System has a leak, as indicated by the P202D00 code.

Then I noticed that someone had messed with the adblue injector and the delivery pipe leading to it (refer to the picture). Due to concerns about possible tampering, I replaced the adblue injector and the delivery pipe. Got all the codes cleared and then went for a lengthy drive.
See the mistakes in the pictures; EML returned after a long drive.
Could you please assist me? By the way, I would prefer not to remove anything. That has brought me nothing but misery in the past.

[tobiasek]

Additionally, I have activated the delivery pump under pressure, and the resulting graph looks like this.

[tobiasek]

May I have some advice on how to proceed?

[ignacio_stanhopez]

Get a professional instead of the one you used before to delete it?
Alternatively, fix it properly and empty your wallet.

[tobiasek]

I don't know anyone who can do it properly, and honestly, even if I do, I won't trust them. That's the problem. No matter how many times I've gone, no matter how reputable or expensive they were, I've never had a good experience. Due to remappers, I lost approximately £22,000 on a single vito. And thus, my wallet is empty.

[ezra.olawaleer]

So, you did not purchase it from a dealer, right?

[tobiasek]

Yes, it was a private transaction.