Hello everyone. I am looking for some help regarding my Adblue system issues. The vehicle I am trying to fix is Peugeot Boxer Mk3 2019 2.0 day van.
Main issue: "Check AdBlue system" message on dash and check engine light on. No count down. Scanned with Snapon reader and it comes up with:
Engine:
P20E8-21 Pressure of the urea fluid too low
u1118-87 build-in systems interface: absence of communication ( this message appears not every time)
Instrumental Panel:
U0019 CAN LINE
B1016 Third stop ( but it works)
I have removed and cleaned the Adblue injector. not leaking.
The AdBlue tank is full of fluid.
tried to use decrystaliser just in case of blockage, but no luck.
When an issue appears, I can't run actuator tests on any engine components using my scanner. A " no response from module " message appears on the scanner screen.
I guess that the main issue here should be a broken communication wire somewhere, a CAN BUS wire.
can anyone else think of anything else? where could I find diagrams of can bus wires and where they go?
I hope that makes sense.
Regards,
Ricky
24/10/2024
update
today Adblue system have been working fine but scanner picked up new code:
Engine:
U1118-87 Built-in System Interface: Absence of Communication
Airbag:
U0019 CAN line