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

What it means

A receiving module detected implausible data from the inductive (wireless) HV battery charging module. Coil power, alignment or temperature values fail plausibility checks and are rejected, halting the wireless charge session.

At a glance

• Usually lights the warning light of the system that lost communication

How it works

A receiving module checks data from the hybrid or EV battery inductive charging module, which controls wireless charging and reports conditions such as coil power, alignment, or temperature. U044C sets when that data fails plausibility checks and is rejected, so the wireless charging session may be stopped.

Common causes

Most likely first.

1. Module internal fault or sensor input drift
2. Software version mismatch after replacement
3. Gateway module routing CAN messages incorrectly

Symptoms

• Multiple warning lights may illuminate
• Affected modules may go into limp mode or shut down
• Specific functions inoperative depending on module
• Diagnostic tools may show communication faults

How to diagnose it

1. Scan the charging and vehicle modules and save freeze-frame data and related charging codes to identify which reported value triggered U044C.
2. Check whether wireless charging starts or stops, and note any alignment, temperature, or charging warnings shown by the vehicle.
3. With the vehicle powered down as instructed, inspect the wireless charging surfaces for debris, damage, or anything that could prevent proper alignment.
4. Inspect accessible connectors and low-voltage wiring for the inductive charging module for looseness, corrosion, or damage without opening high-voltage components.
5. Compare live charging-module data for alignment, coil operation, and temperature with the vehicle’s actual charging conditions.
6. If the module was recently replaced or updated, verify software compatibility and configuration, then test its power, grounds, and network circuits to manufacturer’s specifications.

Common fixes

• Remove debris or correct an alignment obstruction at the wireless charging surfaces.
• Repair a loose or damaged accessible connector or low-voltage wire to the charging module.
• Correct software compatibility or configuration after module replacement or programming.
• Repair a confirmed power, ground, or network fault affecting the inductive charging module.
• Replace the charging module only if testing confirms its data or internal operation is faulty.

Can I keep driving?

If the only symptom is failed wireless charging, use an approved charging method and arrange diagnosis. Stop using the system if there is unusual heat, damage, or a high-voltage warning, and follow the vehicle’s safety instructions.