TD Sensor - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 12-10-2009, 03:31 PM Thread Starter
BenzWorld Junior Member
Date registered: Nov 2009
Vehicle: 1988 190E 2.3
Location: Indialantic, Florida
Posts: 21
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(Thread Starter)
TD Signal

I have a 1988 190E 2.3 and the check engine light came on. The owner's manual said it was the O2 sensor. I changed it and tried to reset it at the diagnostic port, but there is no wire going to pin #5. I depressed the button for two seconds and released with the ignition key on and car off and the led light flashed 7 times. Is this the TD signal? If so, what is it? I read in other threads that it could be the engine temperature sensor (green with 2 prongs) or also the crankshaft position sensor. Please help.

Last edited by ctdale; 12-10-2009 at 05:30 PM. Reason: Wrong Title
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