DTC P0716: Input Shaft (Mainshaft) Speed Sensor (Range/Performance); DTC P0721: Output Shaft (Countershaft) Speed Sensor (Range/Performance)

WARNING: This page is about a different car, the 2013 Honda Odyssey, 2012 Honda Odyssey, and 2011 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION ).
This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Block the rear wheels, and raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely, or raise the vehicle on a lift.
Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle with the shift lever in D, and at speeds over 12 mph (20 km/h) for at least 10 seconds. Slow down, and stop the wheels.
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0718 or P0723 indicated?

YES -Go to the DTC P0718 troubleshooting (see DTC P0717: INPUT SHAFT (MAINSHAFT) SPEED SENSOR (NO SIGNAL INPUT); DTC P0718: INPUT SHAFT (MAINSHAFT) SPEED SENSOR (INTERMITTENT FAILURE) ) or the DTC P0723 troubleshooting (see DTC P0722: OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR (NO SIGNAL INPUT); DTC P0723: OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR (INTERMITTENT FAILURE) ).

NO -Go to step 6.
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0716 or P0721 indicated?

YES -Go to step 7

NO -Intermittent failure, the system is OK at this time.
Check the input shaft (mainshaft) speed sensor or the output shaft (countershaft) speed sensor for poor connection and proper installation.
Are the connection and installation OK?

YES -Replace the input shaft (mainshaft) speed sensor (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT ) or the output shaft (countershaft) speed sensor (see OUTPUT SHAFT (COUNTERSHAFT) SPEED SENSOR REPLACEMENT ), then go to step 8.

NO -Connect the speed sensor connector and reinstall the speed sensor, then go to step 8.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle with the shift lever in D, and at speeds over 12 mph (20 km/h) for at least 10 seconds. Slow down, and stop the wheels.
Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0716 or P0721 indicated?

YES -Go to step 1.

NO -Troubleshooting is complete.