D-4D P252F + P2463 post injection issues (DPF) - Toyota Yaris Forums

rzvn.rosu · 03-05-2026, 05:43 PM

Hello,

I'm running a 2011 Yaris D-4D, 220k km.

I'm having some constant issues with the DPF regeneration: it seems to be filling up quite fast, even in extraurban driving. It clogs and then when the regeneration kicks in, the sooth is cleaned way down to 15%.

Besides this, sometimes, I end up with the yellow wrench.
By scanning the OBD2 with Toyota Techstream, I have read the following codes:
P252F (excessive post injection fuel) and P2463 (DPF regeneration unusuccesful attempt).

These seem like recurrent issues.

I am hoping that other 1NDTV engines have faced this issue in the past.
Any tips?

03-05-2026, 05:43 PM	#1
rzvn.rosu I've made a post! Drives: Yaris Mk2 D-4D Join Date: Mar 2026 Location: Romania Posts: 1	D-4D P252F + P2463 post injection issues (DPF) Hello, I'm running a 2011 Yaris D-4D, 220k km. I'm having some constant issues with the DPF regeneration: it seems to be filling up quite fast, even in extraurban driving. It clogs and then when the regeneration kicks in, the sooth is cleaned way down to 15%. Besides this, sometimes, I end up with the yellow wrench. By scanning the OBD2 with Toyota Techstream, I have read the following codes: P252F (excessive post injection fuel) and P2463 (DPF regeneration unusuccesful attempt). These seem like recurrent issues. I am hoping that other 1NDTV engines have faced this issue in the past. Any tips?

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