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Multiple Short Circuit to ground error codes

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Old Sep 12, 2023 | 06:09 PM
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Jeffreyja
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2017 C300 Coupe
Unhappy Multiple Short Circuit to ground error codes
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
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Old Sep 13, 2023 | 01:16 AM
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Amg C43
Any mods?
Did this start all at once?
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Old Sep 13, 2023 | 01:59 AM
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2019 CLS450 (C257)
here's another post for reference, different codes but do look at the various troubleshooting...

https://mbworld.org/forums/c-class-w...stem-oops.html
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Old Sep 13, 2023 | 05:49 AM
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2017 C300 Coupe
No mods and yes it all started at once
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Old Sep 13, 2023 | 08:16 AM
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2017 C300 Coupe
Thank you
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Old Sep 6, 2025 | 06:53 PM
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Same problem
Originally Posted by 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
I have the same issue with my 2016 C300. What was the problem? Thank you
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