I first had this issue after heavy raining. Now the vehicle stalls when driving.
This code is for the transmission speed sensor. This is mounted externally on the tailshaft housing of the transmission. Normally replacing it will solve the problem. This code doesn't affect whether the engine starts or not.
P0715 FORD - Transmission Speed Sensor Circuit
Read more: https://www.autocodes.com/p0715_ford.html
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