Hello,
The codes
P0716 Input speed sensor 1 circuit performance
P0721 Output speed sensor circuit performance
P0791 Transfer speed sensor circuit
These codes can get triggered due to a number of reasons. It could be not getting proper signal due to wiring issue, bad sensors, or issue with the powertrain control module (PCM).
See below, I have attached the diagnostics guide for these codes. Follow those processes, as it can help you determine the issue.
Let me know of any questions.
Thank you.
https://www.2carpros.com/articles/automatic-transmission-problems
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Tuesday, May 31st, 2022 AT 8:44 AM