Help please cel codes. Tranny problem
I recently had the infamous transmission Leak through the adapter plug and down the harness into the tcu. I have replaced the plug fixing the leak, ran a new wire harness, and got a new tcu. I was showing a P0600 code with old tcu so when I plugged in the new one now I am getting codes p0715 and p0730. Do I need to just have the tcu re-adapted or do I have bigger problems? Car is stuck in limp mode. All fluids are new and correct level.
P220A The speed comparison of Y3/6n2 or Y3/6n3 is implausible.
P2221 The signal of component Y3/6b1 (ATF temperature sensor) and (or) Y3/6s1 (Starter lockout contact) is implausible.
P2502 The gear is implausible or the transmission is slipping.
my obd2 scanner is still reading
P0715 Input/Turbine Speed Sensor Circuit Malfunction
P0730 Incorrect Gear Ratio
He re-programmed the vin # to the new tcu to match my car and nothing changed (but idk if he did it right he looked confused)
any thoughts or help would be greatly appreciated! thanks

1. Turn the igniiton key to the "on" position which is just before you crank the engine to start.
2. Press the accelerator to the floor and hold for 5 seconds.
3. Then turn the key to the off position but do not remove the key, then release the accelerator.
4. Wait at least 2 minutes, the ECU is then reset.
Something I found here and do every once In a while.. Good luck..
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If I am not wrong, your car was running fine right until your TCU got flooded right? So there should not be anything wrong with the Trans. It must be the TCU. If your mechanic wants to replace the Trans, I would run from him.
Good Luck!

If I am not wrong, your car was running fine right until your TCU got flooded right? So there should not be anything wrong with the Trans. It must be the TCU. If your mechanic wants to replace the Trans, I would run from him.
Good Luck!
If I am not wrong, your car was running fine right until your TCU got flooded right? So there should not be anything wrong with the Trans. It must be the TCU. If your mechanic wants to replace the Trans, I would run from him.
Good Luck!
no its not stupid at all...got it from a 2004 c240 722.6 tranny rwd....identical part# - yes i have been told the vin was tied and it wasnt...not sure if it mattered or was mandatory but i watched him enter the vin in DAS because it was showing 0000000000000000 under TCU VIN# so there was atleast a spot for a vin to be entered...yep no problems until the tcu finally crapped out, yes I am running from him lol i dont know if he just doesnt want to mess with it or if he is retarted...
the ecu software could be a problem I have no idea if they are they same although this supposedly came out of a 2004 model...i will definitely try and get that looked at as well thanks a lot!
i have seen a few posts about the conductor plate maybe this could be the issue as well I will try and look into all of these this week you guys are awesome!
so will a used tcu only work from a c32? what about a tcu from a 2003 c270 or a 2004 c230 i can get those i just cant find one from another c32 unless i buy a new one for like 600 I only paid 85 for the c240 tcu i really dont wanna shell out that much cash if that isnt even the problem and the conductor plate or something else is the issue lol
Last edited by spatton; Aug 25, 2011 at 12:21 AM.



