What is FAULT CODE P20F5
- Thread starter FuzeBenz
- Start date
Jonesy161
Active Member
Reduction consumption too high. I’m guessing that this means adblue or similar.
Could it be the nox sensor as I have an adblue malfunction message and like 400 miles left before it turns off?
OneForTheRoad
MB Enthusiast
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- Apr 20, 2015
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- uk.
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- 2019 Glc coupe 350d was 2017 e350 c207 .. +65 ford kuga 2.0 cdi zetec awd..
Seems to point towards the ad blue injector being worn and spraying too much ad blue.
Have you added ab blue to the tank recently ?
No, It appeared after 1/5 of the tank had been emptied. I refilled it once this error code showed
@OneForTheRoad
I drove 1000+ miles and then 1/5 of the tank remained and then the adblue malfunction warning 500 miles remaining and the engine lamp came on.
OneForTheRoad
MB Enthusiast
- Joined
- Apr 20, 2015
- Messages
- 6,564
- Location
- uk.
- Car
- 2019 Glc coupe 350d was 2017 e350 c207 .. +65 ford kuga 2.0 cdi zetec awd..
Try adding more and cycle the ign a few times waiting 30 seconds in-between tries.
It didn’t do anything. It said no messages for 1 second but showed the error and Engline light back on. The adblue meter didn’t go up though once I filled it up to full. I went on the workshop menu and it showed that adblue was full. I think it’s not updating cus of the adblue malfunction and engline light. I’ve got an appointment for a recall so I’ll wait till then
