DTC U0401:00 [ELECTRIC POWER STEERING (EPS)]

id0602a1812200

DTC U0401:00	Signal error from PCM
DETECTION CONDITION	• Error detected in signal from PCM via CAN communication
FAIL-SAFE FUNCTION	• Refer to “Fail-safe Function Table”. (See DTC TABLE [ELECTRIC POWER STEERING (EPS)].)
POSSIBLE CAUSE	• PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY PCM DTC • Using the M-MDS, perform the PCM DTC inspection. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-G 2.5T)].) DTC troubleshooting completed, then go to the next step.
1		No	Go to the next step.
2	VERIFY DTC TROUBLESHOOTING COMPLETED • Using the M-MDS, clear the DTC from the EPS control module. (See CLEARING DTC [ELECTRIC POWER STEERING (EPS)].) • Using the M-MDS, perform the EPS control module DTC inspection. (See DTC INSPECTION [ELECTRIC POWER STEERING (EPS)].) • Is the same DTC present?	Yes	Replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
2		No	DTC troubleshooting completed.