Error codes on MB C350e pre-purchase inspection
Discussion
Hi there,
I was planning to buy a 2017 C350 estate (85,350 miles) to replace my C220d which is not ulez compliant. It is a private seller with full MB dealer service history and an MOT in December 2024. However I decide to get a pre-purchase inspection through Clickmechanic.com. He says its structurally fine, suspension good, but says that although there are no warning lights or messages on the dash, an number of codes come up when he plugs in the diagnostic. Can anyone help me determine how serious or costly these might be? I have posted the codes but I don't understand the significance. Can these be ignored or easily rectified, or will they cost a fortune to address?
TRANSMISSION CONTROL MODULE
Error code U0126 means there’s a loss of communication with your steering angle sensor module.
P07E400: The park pawl cannot be engaged.
P07B571. Sensor A of the park pawl has a malfunction
ENGINE CONTROL MODULE
P052E71 The crankcase ventilation valve is faulty. The actuator is blocked
P06DA00 select error codes/events in control unit ( this appears to be to do with oil pump control valve)
COMMON POWERTRAIN CONTROLLER
P120900 The lock of the socket flap has an open circuit
P1D8C00 -The switchover valve of low-temperature circuit 1 has a malfunction
There is another regarding driver side SAM front signal acquisition and actuation module which I cant see in the photos.
Most of them are marked as “Stored” whatever that means.
Any help would welcome. I was keen to buy this car as it is local, a good price, and what I am looking for, but I don’t want to buy a load of problems.
Thanks
Gordy
I was planning to buy a 2017 C350 estate (85,350 miles) to replace my C220d which is not ulez compliant. It is a private seller with full MB dealer service history and an MOT in December 2024. However I decide to get a pre-purchase inspection through Clickmechanic.com. He says its structurally fine, suspension good, but says that although there are no warning lights or messages on the dash, an number of codes come up when he plugs in the diagnostic. Can anyone help me determine how serious or costly these might be? I have posted the codes but I don't understand the significance. Can these be ignored or easily rectified, or will they cost a fortune to address?
TRANSMISSION CONTROL MODULE
Error code U0126 means there’s a loss of communication with your steering angle sensor module.
P07E400: The park pawl cannot be engaged.
P07B571. Sensor A of the park pawl has a malfunction
ENGINE CONTROL MODULE
P052E71 The crankcase ventilation valve is faulty. The actuator is blocked
P06DA00 select error codes/events in control unit ( this appears to be to do with oil pump control valve)
COMMON POWERTRAIN CONTROLLER
P120900 The lock of the socket flap has an open circuit
P1D8C00 -The switchover valve of low-temperature circuit 1 has a malfunction
There is another regarding driver side SAM front signal acquisition and actuation module which I cant see in the photos.
Most of them are marked as “Stored” whatever that means.
Any help would welcome. I was keen to buy this car as it is local, a good price, and what I am looking for, but I don’t want to buy a load of problems.
Thanks
Gordy
Edited by Gordy62 on Tuesday 14th January 11:19
Honestly, if you don't know what you're doing and the PPI company can't/won't interpret the codes for you I'd leave well alone. They could be as simple as a faulty battery or a lot more. You'd have to understand cars to decide whether these codes are potential problems, or take the car to a Merc specialist and let them decipher the codes for you.
The codes speak for themselves with an explanation, I quick google of one them gave me this thread on the mercedes club forum which explains that issue in more detail
https://forums.mercedesclub.org.uk/index.php?threa...
Google the rest of them that will give a better idea but I wouldn't be buying the car myself.
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