Component Inspection

Ignition "OFF".
Shift lever position "P" & Ignition "ON"/"READY". ("READY" Lamp ON in Instrument Cluster).
Connect KDS/GDS and select "Diagnostic Trouble Codes (DTC)" mode.
Using a KDS/GDS, Clear DTC.
Operate the vehicle within DTC Detecting Condition in General Information. (turn right and left at least 1 time).
Select "Diagnostic Trouble Codes (DTC)" mode again.
Is the same DTC stored in the system?

Good

Fault is intermittent caused by poor contact in the sensor's and/or MDPS Unit connector or was repaired and MDPS Unit memory was not cleared. Thoroughly check connectors for backed out terminal, improper mating, broken locks, looseness, poor connection, bending, corrosion, contamination, deterioration, damage or poor terminal to wire connection. Repair or replace as necessary and go to "VERIFICATION OF REPAIR " procedure.

No Good

Carefully re-do this troubleshooting guide steps.
If no problems were found with the circuits or connectors, replace the MDPS Unit and go to "VERIFICATION OF REPAIR " procedure.