DTC Troubleshooting: P1841
DTC P1841: CVT Speed Sensor Circuit Reverse Rotation Range/Performance
NOTE: Before you troubleshoot, review the General Troubleshooting Information.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P1841 CVT Speed Sensor Circuit Reverse Rotation Range/Performance
      

1.
CVT speed sensor check:

CVT speed sensor check
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Raise the vehicle on a lift. Make sure it is securely supported, and allow all four wheels to rotate freely.

?4.
Start the engine, disable the VSA by pressing the VSA OFF button.
NOTE: Enter the VSA maintenance mode in case of the vehicle speed above 31 mph (50 km/h).

?5.
Test-drive the vehicle in R position/mode at speeds over 19 mph (30 km/h) for at least 5 seconds.

?6.
Check the parameter(s) below with the HDS while running the vehicle in R position/mode.
Signal
Threshold
Current conditions
Values
Unit
Values
Unit
Direction of Secondary-shaft Rotation
Reverse
      

Do the current condition(s) match the threshold?

     
YES
     
     
     
The CVT speed sensor is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good TCM, then recheck. If this DTC goes away and the TCM was substituted, replace the original TCM.?
     
NO