Ad blue fault warning

This is the Forum for all your Peugeot Technical Questions, Problems or Advice.
Harding 0507
Posts: 1
Joined: 03 Feb 2026, 03:38

Ad blue fault warning

Unread post by Harding 0507 »

Peugeot308 t9 P01434 P01435 codes came up on dash also countdown for ad blue i did not realise that both systems are fixed ie two tanks a elloys tank and a ad blue .I thought it was a adblue tank fault removed tank cleaned inspected oms test pump but ok oms test on wire voltage ok i didn't understand what was going on till I realised that I had both additive tanks I filled pet or elloys additive tank tried to reset with my thinkcar s4 scan tool cost 100 with a ad blue reset which I used when low on ad blue but it didnt work I tried everything scan tool couldn't reset but nothing I then update though wifi. I performed a scan tool update for thinkcar s4 it worked to my surprise the new update gave me new options to more configure a new tank for additive tank only on expensive scan tools you get options the update gave me for additive tank only the ad blue options were the same I kept my tank which was one car said I changed it as it was empty it must of switched off it ecu and had to be filled with elloys or pet fluid from ebay 2 lts 40 pounds a configuration reset the code now clear 😉 😀
User avatar
mickthemaverick
Moderating Team
Posts: 20112
Joined: 11 May 2019, 17:56
x 7777

Re: Ad blue fault warning

Unread post by mickthemaverick »

Is that a translation ? :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
PaulC5
Donor 2024
Posts: 2273
Joined: 06 Jun 2023, 15:26
x 567

Re: Ad blue fault warning

Unread post by PaulC5 »

The first post is a bit hard to follow, a bit more punctuation would help. I am not sure what has been done or if anything has been fixed and if the fault codes have gone.

Another topic with the same fault codes for the DPF eolys fluid additive P1434 and P1435 along with their definition for a Berlingo viewtopic.php?t=74685
Last edited by PaulC5 on 03 Feb 2026, 12:42, edited 1 time in total.
User avatar
Paul-R
Moderating Team
Posts: 8967
Joined: 07 May 2009, 16:24
x 1860

Re: Ad blue fault warning

Unread post by Paul-R »

I'm struggling to see what the post is all about. I think that it's setting out what a problem was and how it was fixed but I'm not entirely sure!
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

"Trying is the first step towards failure" ~ Homer J Simpson