Jeffreyja

Hi everyone, please I need help with some issues on my 2017 c300.

I am currently having the following error codes all at once.

P059800 The coolant thermostat has a short circuit to ground
P1D01111 The crankcase vent has a short circuit to ground
P240B00 Actuation of the heater in the diagnostic module of the Evaporative Emission (EVAP) control system has a short circuit to ground
P240B00 The output for the switchover valve in the diagnostic module of the Evaporative Emission (EVAP) control system has a short circuit to ground
P260211 The output for the coolant circulation pump has a short circuit to ground
P003100 The output for the heater of the oxygen sensor 1 (cylinder bank 1) has a short circuit to ground
P024511 The low pressure turbocharger output has a short circuit to ground
P045800 The purge valve of the Evaporative Emission (EVAP) control system has a short circuit to ground
P003400 The output for the switchover valve of the charge air bypass flap has a short circuit to ground.

What could be causing this and has anyone experienced something similar?

My mechanic wants to replace my ECU

MJ50

moved to W205 forum...

ribbangga1

I was wondering if you ever sorted this out. My wife had the same problem, and we ultimately found a bad relay, a light grey 052 relay, called N Circuit 87M relay

https://fuse-box.info/mercedes-benz/...uses-and-relay