M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

0894 code on $150 w164

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Old Oct 23, 2025 | 05:22 PM
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Trans issue (0893 code) on $150 ML350 w164

Hey yall, I recently picked up an ML350 for literally next to nothing bc of a known trans issue the previous owner was stumped by. Everything else (engine, electronics, etc.) is in excellent shape.

Im getting 0894, and 0893 codes from the TCM
which caused the P0730 code in the ECM

I replaced and programmed conductor plate, along with fresh fluid.
Level is correct and filled at 45 C as required.

Still getting the same issue except now it wont move when shifted into D or R. Just revs like in neutral and sometimes it’ll slam into gear with enough rpm. Before it would drive fine until 3-4 gear change and then fall on its face.

My next steps are to replace the valve body and all solenoids with new o rings.
Would this hopefully get the truck back on the road or should I look for a good used 722.9?
(Or manual swap from a C class??? lol)

ps. fluid was ok with not much shavings on magnet. A couple solenoids had broken o-rings on the nozzle

- Thanks

07 ML350 4matic 150k miles

Last edited by diiippedbeams; Oct 23, 2025 at 07:15 PM. Reason: More descriptive title
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Old Oct 23, 2025 | 09:11 PM
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W221 S500
This is going to sound like a silly question, but did you use the correct fluid? Should be 236.14 red ATF, not the new fangled blue 236.15...
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