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View Full Version : Mercedes Benz 7G Tronic valve body Y3/8Y7 fault 0798



digitaltech
12th March, 2014, 08:07 AM
Fault 0798 is brake clutch solenoid.
We took down the pan, swapped solenoid brake B3 and B2 just to confirm solenoid wasn't bad. Same code came back after engine warmed up.
Local dealer said to replace "Conductor plate and valve body".
Did anyone have any experience with "cleaning" valvebody and using the same conductor plate.

Upon clearing code in the TCM 2-3 times(after the vehicle is warmed up) and cycling the ignition on-off-wait 2min-on transmission works ok until it cools down. Then the code comes back 10-15min after cold start and few up-down shifts of the transmission.

Yes i know speed sensors usually go bad, this is not the case.

mercis
12th March, 2014, 11:47 AM
must electro plate change or send to repair

digitaltech
13th March, 2014, 10:08 PM
ok thank you.