U050D code meaning
Invalid Data Received From Wireless Accessory Charging Module A
What U050D means
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.
U050D at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyEasy
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U050D
- Phone not charging on the pad or charging icon missing
- Repeated phone position warnings
Common causes of U050D
- PossibleCharging module software outdated or mismatched
- PossibleModule overheating, e.g. blocked fan or foreign object on the pad
- Less likelyWireless charging module A internally faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Wireless charging module a
What each part of U050D means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 0D | The exact fault in that area. |
What to do next
- Note U050D and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U050D
What does U050D mean?
U050D means "Invalid Data Received From Wireless Accessory Charging Module A". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with U050D?
U050D does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will U050D fail an emissions test?
U050D is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U050D to fix?
Difficulty: easy. A typical repair takes 0.3 to 1.5 hours of work. This is a job for a workshop.
Will U050D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.