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.
Images (Click to enlarge)
Tuesday, May 31st, 2022 AT 8:44 AM