AdBlue
Thread Starter
Newbie
Joined: Mar 2025
Posts: 2
Likes: 0
AdBlue
Hello.
I have a problem with AdBlue on my 2019 W205(654). The system works, the pressure is 7.5bar, it shows the level, it consumes a little while driving but it turns on the engine light. Diagnostics throws out known errors u05a308 and 387 and urea temperature 0.0 degrees which is impossible.
Does anyone know where that temp sensor is or is it integrated into the tank, pump, injector
I have a problem with AdBlue on my 2019 W205(654). The system works, the pressure is 7.5bar, it shows the level, it consumes a little while driving but it turns on the engine light. Diagnostics throws out known errors u05a308 and 387 and urea temperature 0.0 degrees which is impossible.
Does anyone know where that temp sensor is or is it integrated into the tank, pump, injector
Super Member
Joined: Feb 2007
Posts: 616
Likes: 302
From: Republic of Texas
W203 W212 W211 R53MCS
It's in the tank. Some cars have a repair kit that includes the internals of the tank which have the level and temperature sensors. Just look it up in the EPC by VIN.
