Having problems with your 1984 Mercedes-Benz 190 ?

Hi, I have a Mercedes A170CDi Auto that has gone into limp-mode on the gearbox. I have had a diagnostics check done and it shows a P1841 Current fault code which is a Solenoid Valve Y3/7y2 3 shift fault. Can anyone help me with what exactly this is and, more importantly, how much should it cost to fix or is the gearbox finished? Please help!!! Many thanks. PS - Please ignore the car selection section as there were no options for A Class Mercedes. The car I have IS a A170CDi Avantgarde on an 02 p

Posted / edited by AnonymousUser on : 08-08-2022

Answers :

The code is consistent with an electrical short within the shift motor solenoid. These solenoids open and close fluid passageways within the gearbox that cause clutches engage and disengage with the planetary gear system that make up an automatic gear box. Auto boxes are very involved pieces of machinery and best left to experts so I am afraid it needs a trip to the Mercedes dealership or a good auto transmission depot. It could be that the gear box can be easily renovated by fitting a new solenoid in which case an overhaul rather than replacement will be the cheaper option. Since you have the code for the fault I would phone around for repair quotes.
Repair Help & Product Troubleshooting for 1984 Mercedes-Benz 190

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