"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.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

ODB error code

That Ole Dumb Broad will do it every time!!

The trans?
??????

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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John Roncallo

The clutch solenoid is part # 240-270-17-00.

I suspect it may be the culprit. It is not difficult to replace with transmission in situ. However, it could also be the torque converter which affects the solenoid power consumption resulting in OBD code 740. I reset the code and car drives perfectly, it drove great with the code also. The conductor plate was replaced 60k ago. I will keep an eye on the code before I do anything. I hope it is an one off occurrence and nothing serious. I just wonder any forum members have any experience with this code. Thanks.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.