The P0714 code in your 2023 Chevrolet Equinox indicates that the transmission fluid temperature sensor is providing intermittent or unstable readings. Unlike codes for consistently high or low readings, P0714 suggests the signal is fluctuating erratically, changing too rapidly, or cutting in and out in ways that don't match actual temperature behavior.
Intermittent Signal Characteristics
An intermittent TFT signal might jump between extreme values, cut out momentarily, or show erratic fluctuations that don't correlate with actual temperature changes. The TCM expects temperature readings to change gradually and smoothly. Sudden jumps or dropouts indicate electrical issues rather than temperature changes.
Common Causes
Loose connections are the most common cause of intermittent signals. A connector that's not fully seated, has spread terminals, or has corroded pins creates contact that makes and breaks. Wiring with damaged insulation may short intermittently as it moves with engine vibration. The sensor itself may have an internal intermittent failure.
Symptoms in Your Equinox
Transmission behavior may seem inconsistent—sometimes normal, other times erratic. Shift feel might vary from drive to drive. The check engine light may illuminate and then go off. The transmission may momentarily enter and exit protection modes. These intermittent symptoms often make diagnosis challenging.
Diagnostic Tips
Using GM GDS2, monitor the TFT reading over time. Watch for sudden jumps or dropouts that don't match actual temperature changes. Wiggle test connectors while monitoring—if the reading changes with connector movement, you've found a loose connection. Check for proper connector lock and pin retention. Inspect wiring where it flexes or passes through bulkheads.