MechanicDB
Fault Family System: Network (U-Codes) 66 SAE Codes

Lost Comm EV Charging Module

Diagnostic & Technical Explanation
U0110 means a module on the high-voltage traction network -- a battery interface module, drive motor inverter, DC/DC or onboard charger control module -- has dropped off its dedicated network segment routed alongside the high-voltage cabling and isolated from the 12V chassis ground system. A failed isolation barrier or a loose high-voltage service disconnect can take down communication even when the low-voltage signal wiring itself is intact. Work here requires high-voltage safety training and insulated tools, since tracing the fault may involve components carrying several hundred volts DC.

These 66 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 66 times.

Codes in this family (66)

CodeDefinitionRepair coverage
U0110Lost Communication With Drive Motor Control Module A4 ranked fixes
U0111Lost Communication With Battery Energy Control Module A4 ranked fixes
U0112Lost Communication With Battery Energy Control Module B4 ranked fixes
U014ALost Communication With Battery Energy Control Module C4 ranked fixes
U014BLost Communication With Hybrid/EV Battery Inductive Charging Module4 ranked fixes
U014CLost Communication With Battery Energy Control Module D4 ranked fixes
U019BLost Communication With Battery Charger Control Module A4 ranked fixes
U01A0Lost Communication With Hybrid/EV Battery Interface Control Module A4 ranked fixes
U01A1Lost Communication With Hybrid/EV Battery Interface Control Module B4 ranked fixes
U01A2Lost Communication With Hybrid/EV Battery Interface Control Module C4 ranked fixes
U01A3Lost Communication With Hybrid/EV Battery Interface Control Module D4 ranked fixes
U01A4Lost Communication With Hybrid/EV Battery Interface Control Module E4 ranked fixes
U01A5Lost Communication With Hybrid/EV Battery Interface Control Module F4 ranked fixes
U01A6Lost Communication With Hybrid/EV Battery Interface Control Module G4 ranked fixes
U01A7Lost Communication With Hybrid/EV Battery Interface Control Module H4 ranked fixes
U01A8Lost Communication With Hybrid/EV Battery Interface Control Module I4 ranked fixes
U01A9Lost Communication With Hybrid/EV Battery Interface Control Module J4 ranked fixes
U01AALost Communication With Hybrid/EV Battery Interface Control Module K4 ranked fixes
U01ABLost Communication With Hybrid/EV Battery Interface Control Module L4 ranked fixes
U01ACLost Communication With Hybrid/EV Battery Interface Control Module M4 ranked fixes
U01ADLost Communication With Hybrid/EV Battery Interface Control Module N4 ranked fixes
U01AELost Communication With Hybrid/EV Battery Interface Control Module O4 ranked fixes
U01AFLost Communication With Hybrid/EV Battery Interface Control Module P4 ranked fixes
U01B0Lost Communication With Battery Monitor Module4 ranked fixes
U01BBLost Communication With Battery Charger Control Module B4 ranked fixes
U01BDLost Communication With DC/DC Converter Control Module C4 ranked fixes
U01BELost Communication with Drive Motor A Clutch Actuator4 ranked fixes
U01BFLost Communication with Battery Management Control Module4 ranked fixes
U020CLost Communication With Wireless Accessory Charging Module A4 ranked fixes
U020DLost Communication With Wireless Accessory Charging Module B4 ranked fixes
U027ALost Communication With Battery Charger Control Module C4 ranked fixes
U027BLost Communication with Battery Charger Control Module D4 ranked fixes
U027CLost Communication With Off-Board Charger Control Module4 ranked fixes
U0288Lost Communication With DC/AC Converter Control Module A4 ranked fixes
U0289Lost Communication With DC/AC Converter Control Module B4 ranked fixes
U0292Lost Communication With Drive Motor Control Module B4 ranked fixes
U0293Lost Communication With Hybrid/EV Powertrain Control Module4 ranked fixes
U0294Lost Communication With Powertrain Control Monitor Module4 ranked fixes
U0295Lost Communication With AC/AC Converter Control Module4 ranked fixes
U0296Lost Communication With AC/DC Converter Control Module A4 ranked fixes
U0297Lost Communication With AC/DC Converter Control Module B4 ranked fixes
U0298Lost Communication With DC/DC Converter Control Module A4 ranked fixes
U0299Lost Communication With DC/DC Converter Control Module B4 ranked fixes
U029ALost Communication With Hybrid/EV Battery Pack Sensor Module4 ranked fixes
U029BLost Communication With Drive Motor Control Module C4 ranked fixes
U029CLost Communication With Drive Motor Control Module D4 ranked fixes
U02AELost Communications With Hybrid/EV Battery Coolant Pump4 ranked fixes
U02BALost Communication With Hybrid/EV Electronics Coolant Pump B4 ranked fixes
U02C1Lost Communication With Hybrid/EV Electronics Coolant Pump C4 ranked fixes
U061ELost Communication with Battery Isolation/Voltage Stabilization Control Module4 ranked fixes
U0634Lost Communication With Hybrid/EV Battery Pack Coolant Temperature Sensor A4 ranked fixes
U0635Lost Communication With Hybrid/EV Battery Pack Coolant Temperature Sensor B4 ranked fixes
U0636Lost Communication With Hybrid/EV Battery Pack Coolant Control Valve A4 ranked fixes
U0637Lost Communication With Hybrid/EV Battery Pack Coolant Control Valve B4 ranked fixes
U0638Lost Communication With Hybrid/EV Electronics Coolant Temperature Sensor A4 ranked fixes
U0639Lost Communication With Hybrid/EV Electronics Coolant Temperature Sensor B4 ranked fixes
U063ALost Communication With Hybrid/EV Electronics Coolant Temperature Sensor C4 ranked fixes
U063DLost Communication With Hybrid/EV Electronics Coolant Pump A4 ranked fixes
U0646Lost Communication With Motor Electronics Coolant Pump A4 ranked fixes
U0647Lost Communication With Motor Electronics Coolant Pump B4 ranked fixes
U0648Lost Communication With Motor Electronics Coolant Pump C4 ranked fixes
U064ALost Communication With Hybrid/EV Battery Pack Current Sensor A4 ranked fixes
U064BLost Communication With Hybrid/EV Battery Pack Current Sensor B4 ranked fixes
U064CLost Communication With Hybrid/EV Battery Pack Current Sensor C4 ranked fixes
U0694Lost Communication With Hybrid/EV Battery Pack Coolant Pump A4 ranked fixes
U0695Lost Communication With Hybrid/EV Battery Pack Coolant Pump B4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here: