DTC Troubleshooting: U0029-00
DTC U0029-00: F-CAN Malfunction (Bus-Off)
NOTE:
Before you troubleshoot, review the general troubleshooting information.
Troubleshoot any PGM-FI system DTCs first.
This DTC is stored by communication failure between the F-CAN line and the EPS control unit. When DTC U0029-00 is indicated, the F-CAN line has already returned to normal. Check for loose terminals and poor connections in the connectors. If the connectors are OK, clear the DTC and following this troubleshooting.

DTC Description
DTC
Freeze Frame
U0029-00 F-CAN Malfunction (Bus-Off)
    

1.
Determine possible failure (EPS control unit connector B):

Determine possible failure (EPS control unit connector B)
?1.
Check for loose terminal and poor connection in the following connector.
EPS control unit connector B (6P)

Is the connector OK?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
Repair loose terminal or poor connection. Then clear the DTC by using the HDS and recheck DTC U0029-00. If DTC U0029-00 is not confirmed, troubleshooting is complete.?
2.
EPS control unit communication check:

EPS control unit communication check
?1.
Turn the vehicle to the OFF (LOCK) mode, then start the engine.

?2.
Check for communication between the EPS control unit and the HDS.

Is there communication between the EPS control unit and the HDS?

     
YES
     
     
     
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.?
     
NO