U0184: How to Diagnose & Fix — Lost Communication With Radio
38 vehicles · 22 makes · $100-$6,000 repair
How to diagnose and fix U0184: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Porsche Taycan · 2020–2025
The Taycan PCM infotainment system and vehicle management software experience frequent bugs including screen freezes, Apple CarPlay disconnections, climate control malfunctions, and navigation errors. OTA updates have improved stability but new bugs are occasionally introduced with each update cycle.
Common Symptoms
- Touchscreen freezing or unresponsive
- CarPlay disconnecting randomly
- Climate control changing settings on its own
- Navigation providing incorrect routes
- Instrument cluster displaying incorrect information
How to Fix
Keep the vehicle software updated to the latest version via OTA or dealer service. Perform a hard reset of the infotainment system if freezing occurs (hold power button for 10 seconds). Report persistent bugs to Porsche for inclusion in future software patches.
Owner tips & cautions
- TipHold the volume knob and the home button simultaneously for 10 seconds to perform a hard reset of the PCM. This resolves most freeze and display issues without a dealer visit.
Honda Odyssey · 2014–2023
Infotainment system experiences black screens, crashes, freezes, and complete failure due to faulty FAKRA connectors in MOST (Media Oriented Systems Transport) communication network. Improperly designed MOST coaxial cable causes deformed terminals and poor/lost connections. If MOST communication lost for 20+ seconds, rearview camera fails when in reverse.
Common Symptoms
- Infotainment screen goes black/blank
- System freezes or crashes while driving
- Screen won't turn on after starting vehicle
- Rearview camera shows black screen in reverse
- Radio/navigation system unresponsive
- Instrument panel and infotainment reboot while driving
- Crackling speakers (related to MOST bus failure)
How to Fix
Honda issued recalls and TSBs (TSB 20-049, TSB 21-013) with warranty extension. Dealers inspect wiring for MOST network components utilizing FAKRA connectors and reconfigure wiring to prevent stress on harness. Repair involves replacing MOST cable harnesses and installing straightening covers over vehicle cable connectors.
Owner tips & cautions
- TipWhen scheduling service, specifically mention "FAKRA connector" and "TSB 21-013" - some service advisors aren't aware
- TipRequest regional Honda technical specialist if your dealer can't diagnose or says "no problem found"
- WarningDon't accept "software update only" fix - FAKRA connector wiring must be inspected and replaced
- TipIf out of warranty, some dealers approve goodwill coverage for this known defect - escalate to Honda corporate
Sources for this issue (2)
Honda Odyssey · 2018–2023
Media Oriented Systems Transport (MOST) coaxial cable connector improperly designed and manufactured, causing deformed terminals and poor/lost connections between audio display unit and vehicle cable connector. When MOST communication lost for 20+ seconds, rearview camera function fails when shifted into reverse, creating serious safety hazard as driver cannot see behind vehicle.
Common Symptoms
- Backup camera shows black screen when in reverse
- "Check Rear View Camera System" message
- Camera works intermittently
- Camera image freezes or pixelates
- Complete loss of rearview camera function
How to Fix
Honda issued recall covering 2018-2023 Odyssey minivans. Dealers replace MOST cable harnesses and install straightening covers over vehicle cable connectors to prevent future deformation. Owners who paid for repairs before recall eligible for reimbursement. 273,870 warranty claims filed before recall issued.
Owner tips & cautions
- WarningBackup camera failure is serious safety issue - get recall repair done immediately
- TipIf you paid for MOST connector or backup camera repairs before recall, keep receipts for reimbursement
- TipReference the 273,870 warranty claims when requesting goodwill coverage if just outside warranty period
- WarningDon't rely solely on backup camera - always physically check behind vehicle before reversing
Sources for this issue (2)
Mazda CX-5 · 2014–2021
Hyundai Ioniq 5 · 2022–2025
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U0184 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does U0184 mean?
U0184 stands for "Lost Communication With Radio." This network code means a module stopped receiving expected communication messages from the radio/audio module over the vehicle's data bus. When the radio module goes offline or its bus connection fails, this code is logged. On some vehicles the audio module also acts as a network gateway, so its loss can trigger several related communication codes. Symptoms are typically a dead or unresponsive radio/infotainment system; it does not affect drivability.
What are the most common causes of U0184?
The most common causes of U0184 are: Loss of power or ground to the radio/audio module, Blown radio fuse, Wiring or connector fault on the communication bus, Faulty radio/audio control module, Corroded or loose module connector, Network/bus wiring short affecting multiple modules. The specific cause varies by vehicle.
How much does it cost to fix U0184?
Repair costs for U0184 range from $100 to $6,000, depending on the vehicle and root cause.
Which vehicles are affected by U0184?
Au7o has documented U0184 across 38 vehicle models from 22 manufacturers: Alfa Romeo, Audi, BMW, Chevrolet, Chrysler, Dodge, Ford, GMC, Honda, Hyundai, Jaguar, Jeep, Lexus, Lincoln, Mazda, Mercedes-Benz, Porsche, RAM, SEAT, Toyota, Volkswagen, Volvo.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.