Fault Codes: DF025 and DF1252

[Ashley942]

Hi all, sorry if this had been posted before, I look but couldn't find. I need a bit of help here if anyone has had any similar issues.
The following faults came up/lit up on my car Clio 3 1.5 106 diesel

Check Injection,
Check Emissions
Check Cruise Control/Speed Limiter
and Engine Warning Light came on.

So bought a cheap diagnostic reader which came up with the following codes:
P0380 - Glow Plug / Heater Circuit A
P1632 - Manufacturer Control

So took it to Renault and they have given me the following more detailed info:

DF025 - PRE-POST HEATING UNIT. They have recommended I change the glow plugs, she did judder for a few second in winter so I'm guessing that's correct

DF1252 - PARTICLE FILTER INJECTOR SOLENOID VALVE CIRCUIT - This is the main problem, they couldn't be sure if the solenoid valve needed replacing or if it was a wiring issue, apparently the master tech had to look at it.

I'm thinking of just buying a new solenoid valve and hoping for the best, as I'm s**t with electrics and would not have a clue how to test anything.

if anyone has had the same or similar issue and could help please do

Cheers

Ash