Code P0715, Overdrive light is always blinking while driving

2005 FORD E-SERIES VAN
240,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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TOOL_UNO
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The transmission fluid is not low or dirty. I've replaced the input speed sensor for a new one.

The wiring seems fine but is suspect since after a battery reset the code appears on the second start up after diving.

Is there any other speed sensor i should be looking to replace? I replaced the one on the driver's side, but I've heard there's another.

Any diagrams or trouble shooting suggestions related to this issue? Trying to resolve due to emissions.
Jun 19, 2022 at 12:13 PM
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SQM
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Hello,

The code P0715 gets triggered due to not getting proper signal from the TSS (turbine shaft speed) sensor. This could be due to wiring issues as well as the sensor.

The TSS is located on the driver side of the transmission (see attached diagram).

I have also included the troubleshooting guide for the code P0715 below. This can help you determine the issue.

Let me know of any questions.
Thank you.
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Jun 19, 2022 at 12:31 PM