My AT light turned on, at first sporadically and now more often and stays on. I took it to AutoZone for one of their diagnostic testing and got number code P0715: Definition: input turbine spped sensor circuit malfunction (WHICH I'VE REPLACED SINCE THEN), open or short circuit condition, poor electrical connection, failed input turbine speed sensor.
The light now has caused the engine light to turn on.... has anyone had this problem????? I truly am regretting buying this car back in June of THIS year (2012) from the dealership. Dealership warranty has expired.
Sorry to hear that last part. Do you know what engine and transmission it has? How may miles are on it and how is the actual performance? As in, does the shift seem like before the light came on, does the engine REV UP real high, does it work in all gears? Other than the light being on, what else can you tell is different?
It sounds like a sensor issue and this could be the result of bad connection between the sensor and the ECM. There is also a micro computer on the transmission itself. If I were you; I would be disconnect the battery and systematically unplug and inspect every connection on the transmission looking for corrosion, pins not seated, connectors not latched together, burned pins, growth, fungus. Because the battery is right over the trans, sometimes acids can find there way to the wires/connectors and damage them. Also look for the body grounds at the Negatvie side of the battery. Each needs to be inspected and confirmed to be making good contact.
Do you have a mechanic you can trust to give it a once over?
FWIW: the V6 (s) option cars have a nasty habbit of breaking/leaking anti-freeze from a "T" fitting and this could also create corrosion in the connections.
The next ugly thing: sun roofs. There are 4 drains at each corner. The drains go down the pillars and if the one on the left side plugs up and can leak into the left side kick panel in the cabin and cause issues for the ECM/BCM (engine control module / body control module).
That is where I would start. Inspection of these connections should take no more than an hour or less of shop time. Clean any dirty connection and apply dieletric grease to to it. Repair any damaged connections.
If you will; some history. Why do you regret buying it. Do these regrets relate to the current failure mode? f