Lucalena

Hi all, I hope someone can help!

I have a S350 2014 W222 which has recently been causing me some headache. Sometime yesterday the AC went from ice cold to somewhat warm, shortly after this I noticed the fan was constantly running on high. I started the car this morning and the fan come on a couple seconds later again running on high and only goes off once the car is turned off. I’ve also noticed the outside temperature reading is wrong, it’s showing -33c (I live in London UK it’s 25c).

Fault code:

B10VA 15
The refrigerant pressure sensor has a malfunction, there is a short circuit to positive or an open circuit.

I spoke to a local garage who said it will be a lot of work to get to the RPS and they’re not sure it will actually solve the issue. I’m hoping to speak to a Mercedes specialist on Monday and get this figured out.

Perhaps anyone here has had a similar issue and can shed some light on possible fixes?

vinflouen

Did you mean b107a15 code?

BenzNinja

iTrader: (4)

it's a two in one sensor apparently located at the base of the condenser radiator
of course the circuit will be open during replacement so a full refill required
access seems not crazy but sometimes you get some access surprises with modern Benz, I would attempt from under the car

first thing to check is the connector for corrosion, due to it's function, location and Uk's horrible climate for cars, you might find some