What does code U352A mean?

Q: What does code U352A mean?

High Voltage System Interlock Circuit H Performance. U352A indicates that the vehicle's high-voltage interlock loop, a low-current safety circuit that confirms all high-voltage connectors and covers are properly seated, is reporting a performance fault on the circuit designated 'A'. The computer has detected that the voltage or continuity signature on this interlock path is outside the expected range, which typically means a connector is not fully latched, a terminal has high resistance, or the interlock signal is being disrupted.

DTC codes / U35xx · Network communication / U352A

U352AHigh Voltage System Interlock Circuit H Performance

U352A indicates that the vehicle's high-voltage interlock loop, a low-current safety circuit that confirms all high-voltage connectors and covers are properly seated, is reporting a performance fault on the circuit designated 'A'. The computer has detected that the voltage or continuity signature on this interlock path is outside the expected range, which typically means a connector is not fully latched, a terminal has high resistance, or the interlock signal is being disrupted.

SystemNetwork

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyProfessional

AreaNetwork communication

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.