U0184 on Porsche: How to Diagnose & Fix
Lost Communication With Radio
3 Porsche models · 3 documented issues · $2,000-$3,000 repair
U0184 on Porsche by model: symptoms, diagnosis and fix
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.
Early Macans use the PCM 3.1 head unit, which relies on an internal mechanical hard disk drive poorly suited to automotive vibration and temperature. Over time the HDD develops bad sectors and the system enters a boot loop (the Porsche crest appears, the unit shuts down, then restarts every few minutes). Separately, a Sirius XM-related software update pushed in spring 2020 drove many PCM units into a near-continuous reboot cycle that drained the 12V battery and produced loud static. A class action (Bowen/Darnell v. Porsche) over the 2020 update was settled with final court approval in June 2023.
Common Symptoms
- Infotainment reboot loop / repeated Porsche crest screen
- Blank or black PCM screen
- System freezes
- Loud static from speakers
- 12V battery drain from constant rebooting
How to Fix
For HDD-related boot loops, the PCM unit is repaired or replaced (or the storage replaced) — dealer replacement runs roughly $2,000-$3,000. For units damaged by the 2020 update, affected owners were eligible for settlement reimbursement (up to $7,500 for documented repairs/battery replacements). Keeping software current and avoiding the faulty update mitigates the reboot cycle.
Sources for this issue (3)
- Porsche PCM 3.1 Infotainment Display (2010-2016): Reboot Loop, Hard Drive Failure, Replacement Guidearticle
- Porsche PCM Lawsuit Settlement Reached Over Infotainment Systems — CarComplaintsarticle
- Class Action Says Sirius XM-Linked Software Update Permanently Damaged Porsche Infotainment Systemsarticle
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 on a Porsche?
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. On Porsche it is documented across 3 models: Taycan, 911, Macan.
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 on a Porsche?
Published repair estimates on Porsche range from $2,000 to $3,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for U0184 on a different make?
View U0184 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.