DTC U0420-86: Check Sum Error Received From Electric Power Steering (EPS) Control Module [Vehicle Control Module]: Outline

DTC U0420:86 (VEHICLE CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Check sum error received from Electric Power Steering (EPS) control module
Detection condition	The vehicle control module (VCM) detects that the vehicle control module (VCM) received a check sum error from the Electric Power Steering (EPS) control module for 10 s.
Fail-safe	(See DTC TABLE [VEHICLE CONTROL MODULE (US)] .)
Possible cause	Electric Power Steering (EPS) control module malfunction Vehicle control module (VCM) malfunction (built into body control module (BCM))
System wiring diagram	Not applicable
Connector diagram	Not applicable