DTC U0401: Invalid Data Received From ECM/Pcm "A"
DTC detecting condition:
When the following conditions are all established.
- Data no-receive DTC of monitored node is not displayed in current code.
- Fail detection counter of monitored node is not updated 32 times in a row. Or checksum error is detected 3 times in a row.
NOTE:
Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE