kdbarclay
New Registration
- Joined
- Oct 15, 2015
- Messages
- 1
- Reaction score
- 0
- Location
- Inverness, Highland, UK
- Your Mercedes
- ML/2012/350Bluetec
Hello
I have a 2012 ML350 Bluetec (w166) vehicle that has covered about 40k miles. The engine management light came on last week. The vehicle is now just out of warranty. I plugged OBD-II code reader in and found I have code P20B9 . Can anyone shed light on what this might be? the vehicle drives fine, one thing I have noticed is that she sometimes struggles to start. A generic search online shows that code in other cars is "reductant heater A control circuit/open" other general sites mention something to do with the AddBlue system heater?
Has anyone else experienced this code and can give some more info.
Many thanks
Kenny
I have a 2012 ML350 Bluetec (w166) vehicle that has covered about 40k miles. The engine management light came on last week. The vehicle is now just out of warranty. I plugged OBD-II code reader in and found I have code P20B9 . Can anyone shed light on what this might be? the vehicle drives fine, one thing I have noticed is that she sometimes struggles to start. A generic search online shows that code in other cars is "reductant heater A control circuit/open" other general sites mention something to do with the AddBlue system heater?
Has anyone else experienced this code and can give some more info.
Many thanks
Kenny