DTC Troubleshooting: C1421-14, C1422-14, C1423-14
DTC C1421-14: Main Torque Sensor Malfunction
DTC C1422-14: Sub Torque Sensor Malfunction
DTC C1423-14: Torque Sensor Power Source Circuit Malfunction

DTC Description
DTC
Freeze Frame
C1421-14 Main Torque Sensor Malfunction
   
C1422-14 Sub Torque Sensor Malfunction
   
C1423-14 Torque Sensor Power Source Circuit Malfunction
   

1.
Problem verification:

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

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode, then start the engine.

?4.
Turn the steering wheel to left and right several times, and keep holding each direction for 10 seconds.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C1421-14 Main Torque Sensor Malfunction
   
C1422-14 Sub Torque Sensor Malfunction
   
C1423-14 Torque Sensor Power Source Circuit Malfunction
   

Is DTC C1421-14, C1422-14, or C1423-14 indicated?

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
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.?
2.
EPS motor/control unit check (substitution):

EPS control unit check (substitution)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.

?3.
Turn the vehicle to the ON mode.

?4.
Clear the DTC with the HDS.


?5.
Turn the vehicle to the OFF (LOCK) mode, then start the engine.

?6.
Turn the steering wheel to left and right several times, and keep holding each direction for 10 seconds.

?7.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
C1421-14 Main Torque Sensor Malfunction
   
C1422-14 Sub Torque Sensor Malfunction
   
C1423-14 Torque Sensor Power Source Circuit Malfunction
   

Is DTC C1421-14, C1422-14, or C1423-14 indicated?

     
YES
     
     
     
     
NO