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Q: I have codes p0726 and p0722 stored in my ECM.

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My car has an automatic transmission.

These codes come on when there are discrepancies in the rpm signal picked up by the engine speed sensor read by the engine control computer and the input shaft speed signal picked up bt the transmission control module. Both of these modules monitor engine speed , they just used different sensors to calculate this and if a difference in signals comes about, then either something is slipping or there is a sensor offering false data. A failing crankshaft or transmission input speed sensor can cause this issue. Consider hiring an experienced technician like one from YourMechanic who can come out for a more hands on look at the car and offer a more personal diagnosis of your check engine light codes.

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