DTC Troubleshooting: P1890
DTC P1890: CVT Speed Control System
NOTE: Before you troubleshoot, review the General Troubleshooting Information.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P1890 CVT Speed Control System
      

1.
DTC check:

DTC check
?1.
Turn the vehicle to the ON mode.

?2.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P1890 CVT Speed Control System
      

Is there any DTC(s) other than DTC P1890?

     
YES
     
     
     
Go to the indicated DTC's troubleshooting.?
     
NO
     
     
     
Go to step 2.
2.
Problem verification:

Problem verification
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Start the engine, and warm it up to normal operating temperature (the radiator fan comes on twice).

?4.
Test-drive the vehicle in D position/mode, accelerate slowly until the vehicle speed reaches 37 mph (60 km/h) on a flat road, then keep the vehicle at speeds about 37 mph (60 km/h) for at least 60 seconds.

?5.
Monitor the OBD STATUS for P1890 in the DTCs MENU with the HDS.
DTC Description
OBD Status
P1890 CVT Speed Control System
  

Does the HDS indicate FAILED?

     
YES
     
     
     
The failure is duplicated. Replace the transmission.?
     
NO
     
     
     
Intermittent failure, the system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.?