PeachParts Mercedes-Benz Forum - '99 S500 Code P0740 TCC circuit malfunction

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rickwomble

12-12-2008 09:59 AM

'99 S500 Code P0740 TCC circuit malfunction

I have a '99 S500 with about 175K miles and the engine light keeps coming on. I checked the code and it shows code P0740 TCC Circuit Malfunction.
Any advice on where to find the interpretation of the codes would be appreciated.

Thank you

Rick Womble

TMAllison

12-12-2008 11:45 AM

Take a peak at the harness connecting trans to computer for atf contamination. Both ends.

Oracle12345

12-12-2008 02:07 PM

inspect the harness and check the circuitry. Check for corrison etc Test the solenoid too if it has one

TCC is torque converter clutch

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