Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Dear customer, thank you for choosing Justanswer. My name is***** would like to help you.
You can ignore the U error, it falls into the category "is sometimes there but doesn't matter".
The P error is interesting and probably out of the problem. This error describes a problem with the solenoid valve of the oil pump. This valve controls the oil pressure in the engine. If the oil pressure is not correct, some things do not fit in the engine control (valve lash compensation or camshaft adjustment). This can lead to jerking.
Therefore the workshop should inspect the valve and replace it completely if necessary. The valve is located in the oil pump.
I would be very happy about a rating with 5 stars over the star bar at the top of the page, without this rating the site operator does not pay us experts.
What´s the VIN of your Car?
The work should be carried out by an authorized Mercedes workshop. They should first check if the valve is defective before disassembling.
The valve costs about £ 50, but the work is very expensive, 11.5 hours are given here, because the oil pump must be removed apparently completely to be able to replace the valve. Since the work is quite complicated Mercedes should do this, they also have the appropriate special tools.
The total cost of labour and valve should be around £1100 to £1300. There are also some gaskets that cannot be reused.