U0485 code meaning
Invalid Data Received From Radio
Network system Generic code U04xx codes Check engine light
What U0485 means
U0485 means the radio or centre stack still transmits but a receiving module rejects its frames. GM's 2025 tables (25OBDG03B, 25OBDG04B) describe the body control module checking alive rolling counters, protection values, checksums and CRCs of centre-stack signals, among them HVAC control requests: 8 failures in 10 samples, for some signals 14 in 18 or 15 in 16, set it at least 5 s after power-up, with the partial network active for 3 s, power mode Run and over 11 V; Type B. GM PIE0807A covers a MIL with U0485 and U1962 on the 2024 Traverse and Acadia 2.5 L. Stellantis lists it in 08-046-23, 08-014-24 and 08-101-25 (Grand Cherokee, Wagoneer, Pacifica), stored by the amplifier or with a MIL; radio software cures it. U0184 is lost contact.
U0485 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0485
- Radio resets, black screen or audio sources inoperative
- Climate controls on the screen do not respond
- MIL on some vehicles
Common causes of U0485
- Most likelyRadio or infotainment software level with known message errors, fixed by an update
- PossibleRadio resetting or waking late so that counters and checksums no longer match
- Less likelyLow supply voltage or a disturbed bus connection to the centre stack
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Radio head unit
What each part of U0485 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 85 | The exact fault in that area. |
What to do next
- Note U0485 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 U0485
What does U0485 mean?
U0485 means "Invalid Data Received From Radio". U0485 means the radio or centre stack still transmits but a receiving module rejects its frames. It is a generic code, so it means the same on every make.
Is it safe to drive with U0485?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will U0485 fail an emissions test?
U0485 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 U0485 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will U0485 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.