What this code means
P0717 may mean the PCM is not seeing a usable signal from the input or turbine speed sensor A circuit.
What the vehicle may do
- The vehicle may show transmission warning behavior.
- It may shift abnormally or feel limited in operation.
- The symptom can be intermittent if the circuit fault is not present during testing.
Possible fault areas
- A possible concern in the torque converter turbine speed sensor circuit.
- Possible poor connector fit, loose terminals, or wiring faults between the sensor and the PCM.
- A possible sensor-side concern if the circuit checks point that direction.
- A possible PCM software or PCM-side concern after the NT wire checks good.
Diagnostic path
Set up the diagnostic approach
On this 2010 to 2016 Honda CR-V, P0717 means the PCM may not be seeing a usable input, or turbine speed sensor A, signal. The vehicle may show transmission-related symptoms like odd shifting or limited operation, and the problem may be intermittent if the circuit fault is not present during testing. For this code, stay focused: this path treats P0717 as an electrical circuit problem, not an internal mechanical transmission problem. Start with the basic system checks, follow a structured diagnostic approach, and think in terms of the torque converter turbine speed sensor circuit, connector and terminal condition, wiring between the sensor and the PCM, and only later, PCM software or PCM substitution if the circuit checks lead you there.
Duplicate the code first
Begin by verifying the problem. Turn the vehicle to ON mode and clear the DTC with the HDS. Raise the vehicle on a lift, make sure it is securely supported, and allow the front wheels to rotate freely. Start the engine, disable VSA with the VSA OFF button, then run the vehicle at speeds over 19 mph (30 km/h) for at least 30 seconds. Slow down, stop the wheels, and check Pending or Confirmed DTCs with the HDS. If P0717 is back, the failure is duplicated and you move into circuit testing. If it is not back, treat it as intermittent for now. The system is OK at this time, so check for poor connections or loose terminals between the torque converter turbine speed sensor and the PCM. If captured operating data is available, try to reproduce the captured conditions instead of guessing.
Check the NT line voltage first
With the failure duplicated, turn the vehicle to OFF (LOCK) mode and disconnect the torque converter turbine speed sensor 3P connector. Turn the vehicle back to ON mode. Measure voltage from terminal No. 2 at the torque converter turbine speed sensor connector to body ground. You are looking for about 5 V. If you have about 5 V, keep moving down the sensor-side checks. If you do not have about 5 V, skip ahead to the NT line short and open checks.
Check VCC2, then separate the sensor from the ground circuit
Next, with the sensor connector still disconnected and the vehicle in ON mode, measure terminal No. 3 at the torque converter turbine speed sensor connector to body ground. Again, the expected reading is about 5 V. If that voltage is missing, repair an open in the VCC2 wire between the torque converter turbine speed sensor and the PCM. If the voltage is present, move to the sensor check. Measure between terminal No. 1 and terminal No. 3 at the torque converter turbine speed sensor connector. If that measurement is about 5 V, replace the torque converter turbine speed sensor. If it is not about 5 V, repair an open in the SG2 wire between the torque converter turbine speed sensor and the PCM.
If the NT voltage is missing, check for a short, then an open
If the earlier NT line check did not show about 5 V, turn the vehicle to OFF (LOCK) mode. Jump the SCS line with the HDS and wait more than 1 minute. Disconnect PCM connector C (51P). Now check continuity between terminal No. 2 at the torque converter turbine speed sensor connector and body ground. If there is continuity, repair a short to body ground in the NT wire between the torque converter turbine speed sensor and the PCM. If there is no continuity, the NT wire is not shorted, so check for an open. Check continuity between terminal No. 2 at the torque converter turbine speed sensor connector and PCM connector C (51P) terminal No. 21. If there is no continuity, repair an open in the NT wire between the torque converter turbine speed sensor and the PCM.
Only go toward the PCM after the NT wire checks good
If the NT wire has continuity from the sensor connector to PCM connector C (51P) terminal No. 21, the NT wire is OK. At that point, update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If P0717 goes away after a PCM update, troubleshooting is complete. If P0717 goes away with a known-good PCM substituted, replace the original PCM. The takeaway is simple: duplicate P0717, prove the VCC2, SG2, and NT circuit paths, and only move toward PCM software or PCM replacement after the wiring checks good. For more diagnostic training, visit stepdiagnostics.com.
Final check
This diagnosis can often be narrowed by verifying the code first, then checking the sensor circuit and wiring before considering the PCM side.
For more guided automotive diagnostics, visit STEP Diagnostics.
