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Home / DTC / U044C — Invalid Data Received From Hybrid/EV Battery Inductive Charging Module

U044C — Invalid Data Received From Hybrid/EV Battery Inductive Charging Module

Detailed page for trouble code U044C.

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U044C

Generic U — Network/User

Invalid Data Received From Hybrid/EV Battery Inductive Charging Module

Brand: Generic
Type: U — Network/User
Views: UK: 16 EN: 22 RU: 18
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Page language: EN

Causes

  • Faulty hybrid/EV battery inductive charging module (internal fault)
  • CAN / LIN data corruption or bus errors
  • Damaged wiring, chafed harness, loose or corroded connector(s) between modules
  • Low or missing power/ground to the inductive charging module
  • Faulty battery management system (BMS) or other gateway module misreporting data
  • Incorrect or incompatible software/calibration in one or more control modules

Symptoms

  • Malfunction Indicator Lamp (MIL) or warning light illuminated
  • Inductive charging not starting or stops unexpectedly
  • Reduced or no charging via inductive pad while wired charging may still work
  • Incorrect state-of-charge (SOC) or charging status displayed
  • Additional communication or related U-codes present
  • Vehicle may enter limited charging or limp mode for safety

What to check

  • Read and record all current and pending DTCs and freeze-frame data from all modules (BMS, charger, vehicle network)
  • Check for related U- and B- codes that identify affected messages or source module
  • Visually inspect wiring and connectors at the inductive charging module and between it and the BMS/vehicle gateway
  • Verify module supply voltage and ground integrity with the ignition in correct state
  • Scan live data for expected inductive charging parameters (status, voltage, current, SOC) and message frequency
  • Check CAN bus health: error counters, bus-off events, termination resistors, and physical continuity

Signal parameters

  • CAN message ID(s) for inductive charger status
  • Message frequency (expected bus rate and packet intervals)
  • Payload fields: charging_status, pack_voltage, pack_current, state_of_charge (SOC), pack_temperature
  • Checksum or CRC field validity
  • Power supply voltage to inductive charging module (Vbatt or ignition feed)
  • Module ground resistance/volt drop

Diagnostic algorithm

  1. Connect a professional scan tool; retrieve and record U044C and any related codes and freeze-frame data from all networks.
  2. Check for other modules reporting invalid or missing data (BMS, charger, gateway, instrument cluster). Note which CAN node reported U044C.
  3. Perform visual inspection of wiring, bends, and connector pins at the inductive charging module, BMS and gateway. Repair any damage or corrosion.
  4. With ignition ON, measure module supply voltage and ground quality. Repair open/poor circuits before further tests.
  5. Monitor live data: confirm whether inductive charger messages arrive on CAN and whether values are plausible. Note missing or intermittent packets.
  6. If messages are corrupt or missing, use an oscilloscope/CAN analyzer to capture waveforms, check for bus noise, missing termination, or high error counters.
  7. If bus and wiring are good but data is invalid, check for software updates or calibration service bulletins for charging and BMS modules; reflash per manufacturer procedure if applicable.
  8. If module continues to report invalid data after power/ground and network checks, consider bench testing or replacing the inductive charging module per service manual.
  9. After repairs, clear codes and perform drive/charge cycles to verify the fault does not return and normal charging parameters resume.

Likely causes

  • Intermittent or failed CAN communication between the inductive charging module and vehicle network
  • Poor connector contact or damaged wiring at the inductive charging module
  • Inductive charging module hardware fault or internal firmware error
  • Power/ground fault to the inductive charging module

Fault status

⚠️ Status
Invalid data received from hybrid/EV battery inductive charging module — communication or data integrity failure.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5-3.0 hours

Similar codes

U0401 U0415 U0420 U0442 U0100 U0121
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