722.6 transmission - ODB error code 740 - PeachParts Mercedes-Benz Forum

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722.6 transmission - ODB error code 740

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#3

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07-22-2023, 11:24 AM

Roncallo

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88Black560SL

Join Date: Oct 2004

Location: CT

Posts: 3,535

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Quote:

Originally Posted by ah-kay

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"Torque converter lockup clutch has excessive power consumption"

This is what the Mbz code reader shows. It is more detailed than the common reader. The car, 2006 CDI, runs good. I reset the code as I believe it may be a one off. What may have gone wrong? The torque converter or the solenoid? Something sinister or I can ignore?

Btw: car has 320k but runs great.

I can only guess here, but I would think the only power to the transmission converter lock up clutch would be through a converter solenoid. Solenoid could be shorted internally or wires shorted to ground.

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