Network, generic

U050D Invalid Data Received From Wireless Accessory Charging Module A

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modeNo

The wireless accessory charging module is the inductive pad for phones, almost always following the Qi standard, which Toyota was first to offer from the factory, on the 2013 Avalon. The module reports charging state, phone detection and faults to the infotainment or body controller, which shows the charging icon. Ford calls it WACM; for 2018–2022 models it documented slow or no charging and phone mispositioning messages with MagSafe iPhones, advising a check with another Qi phone before replacing parts (SSM 50982). That is a compatibility issue, not U050D. The code itself means the WACM's status frames arrive but are invalid. No maker publishes it. U020C means the module is not heard at all.

Likely causes

Charging module software outdated or mismatched

Module overheating, e.g. blocked fan or foreign object on the pad

Wireless charging module A internally faulty

Symptoms

Phone not charging on the pad or charging icon missing
Repeated phone position warnings

Repair estimate

DifficultyEasyWorkshop job

Parts and labour€0–300

Time0.3–1.5 h

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

Parts involved

wireless charging module a

Related codes

U020C U050E

References: static.nhtsa.gov, en.wikipedia.org.