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U0598 Invalid Data Received From AC/DC Converter Control Module B

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

A second AC/DC converter exists where makers raise AC charging power by fitting two charger units; the F-150 Lightning, for instance, can be ordered with two 40-amp charger units that together reach 19.2 kW. Patents show how the pair is run: Porsche's US10029578B2 has one charger lead and the other follow via a communication line only, and Hyundai's US10270273B2 uses a master controller with slave controllers per power module. U0598 means the second unit keeps reporting but its data are rejected, so the vehicle typically falls back to the first charger and charges more slowly. No manufacturer documents U0598 publicly. The lost-communication counterpart in current code lists is U0297.

Likely causes

Second charger unit faulty or overheated
Software of the charger pair not matched after a replacement
Communication line between the chargers damaged

Symptoms

  • AC charging only at roughly half power
  • Charging system warning

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–2,500
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

ac dc converter module b

Related codes

U0597U0296

References: patents.google.com, patents.google.com, en.wikipedia.org.