1998 C230 P0715 OBDII - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 04-22-2014, 02:19 PM Thread Starter
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Date registered: Dec 2013
Vehicle: Mercedes Benz C230 1998
Location: Beaumont Texas
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Exclamation 1998 C230 P0715 OBDII

I am a newbie so I am soo sorry if I offend anyone with my question because it has been answered before but I didn't find those any of use to my question...So here it goes...

I am getting the Input/Turbine Speed Sensor A Circuit Malfunction code.
Is this from the conductor plate? Dear god please let it not be. LOL. Help would be very appreciated!! I was super sure it was my shifter because it won't light up and there is sticky sh*t all on the connector. It will shift out of park to reverse or drive very hard! <----- For whoever helps me
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post #2 of 2 (permalink) Old 04-22-2014, 02:42 PM
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If I owned your car I would replace the conductor plate, pilot bushing, fluid and filter, and clean out the TCM (likely it's polluted by fluid). While I had the pan off I'd also change the pressure regulator springs; they and the conductor plate were buggy in the early years of the 722.6xx transmission. This is all within the skill range of a casual DIYer.

Do you HAVE to do all that? Well, no, not necessarily. But unless they have been previously changed, you run the risk of having to redo a lot of work when you go back in the second time around. And for the moderate cost of the conductor plate and springs, I'd just hit it with both at the same time.

Once that is done, you will also have to have the codes cleared from the TCM by a proper scanner, regular OBD-II won't do it. A good indie or indie transmission shop shouldn't charge too much to do that.

You may wish to read through the excellent 722.6xx FAQ thread in the W210 forum help/DIY stickies, it's a great primer for understanding more about your transmission.

Good luck.

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