Persistent High Packet Loss Detected
The STARLINK-HIGH_PACKET_LOSS (Starlink) EV fault code means: Persistent High Packet Loss Detected. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $0 if repositioning the dish resolves obstruction. Cable replacement $25-$75 DIY. Professional mount relocation $100-$300. No fix available DIY if the root cause is beam congestion, which Starlink resolves through network capacity upgrades over time.
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Common Symptoms
- Video calls freeze, pixelate, or drop every few minutes even when signal bars look fine
- Online gaming shows high ping spikes or rubber-banding despite a connected dish
- Starlink mobile app Statistics tab shows packet loss above 2% in the last 12 or 24 hours
- Web pages load slowly or stall mid-page even though the dish status reads 'Connected'
- Streaming video buffers repeatedly or drops to low resolution
- Voice-over-IP calls cut out or sound choppy even with decent download speeds
- Speed tests show wildly inconsistent results from one run to the next
Probable Causes (Ranked by Likelihood)
- Partial sky obstruction from trees, a roof edge, or a chimney blocking part of the satellite arc Very Likely
- Satellite-to-satellite handoff gaps caused by marginal sky view or network congestion in a high-demand cell Very Likely
- Loose, kinked, or damaged Starlink cable between the dish and the router reducing signal integrity Likely
- Cell congestion from too many users sharing the same ground beam, especially during evening peak hours Likely
- Dish mounting vibration (on an RV, boat, or metal roof) causing micro-interruptions during satellite tracking Possible
- Extreme weather including heavy rain, wet snow, or dense fog attenuating the signal path Possible
- Router overheating or firmware update in progress causing brief processing drops Less Likely
Step-by-Step Diagnostic Procedure
Open the Starlink mobile app and tap the Statistics tab. Look at the Packet Loss graph for the past 12 and 24 hours. Note whether the spikes are constant or only during certain times of day. Spikes only in evenings point to cell congestion. Spikes all day point to obstruction or hardware.
Tap the Obstruction map in the app. Any colored or shaded area in the sky map means something is physically blocking satellites during that part of their orbit. Even a small colored sliver can cause 3-5% packet loss. If you see shading, the dish needs a clearer sky view.
Check the cable from the dish down to the router. Inspect the entire length for sharp bends, pinch points where a door or window closes on it, or visible cuts. A damaged cable can pass power and basic data but cause intermittent packet drops under load.
Reseat both cable connectors. On Starlink Standard and Gen 3, the connector clicks into the dish and into the router. Unplug both ends, inspect the pins for corrosion or bent contacts, then firmly reseat. Restart the router by unplugging power for 30 seconds.
Run a speed test using fast.com or the built-in test in the Starlink app at three different times: morning, midday, and evening. If loss is worst between 6 PM and 11 PM local time and improves overnight, congestion in your beam is the primary cause, not hardware.
If the dish is on an RV or boat, confirm the mount is rigid and that the dish is not vibrating or tilting. Dishy self-levels on a motorized mount but excessive vibration while moving or in high wind can interrupt tracking. Check that all mounting bolts are tight.
If you have ruled out obstruction and cable issues and loss remains above 2% consistently, open a support ticket through the Starlink mobile app Diagnostics screen. The support team can pull telemetry from your specific dish and confirm whether the issue is local hardware or a network-side problem in your cell.
Frequently Asked Questions
What does HIGH_PACKET_LOSS mean on Starlink?
It means a measurable percentage of the data packets your dish sends and receives are being lost in transit before reaching their destination. Think of it like sending 100 letters and only 97 arriving. For basic browsing you might not notice, but video calls and gaming depend on every packet arriving in order and on time, so even 2-3% loss causes choppy calls, frozen video, and lag spikes.
Can I still use the internet with this condition showing?
Yes, but with reduced reliability. Downloads and web browsing will still mostly work. Real-time applications like video calls, voice calls, and online gaming will be noticeably degraded. Streaming may buffer frequently. The connection is usable but not reliable enough for work calls or anything time-sensitive.
How much does it cost to fix high packet loss on Starlink?
If obstruction is the cause, repositioning the dish yourself costs nothing except your time. A new Starlink cable runs $25-$75 if the existing one is damaged. If you need a professional to relocate a roof mount, expect $100-$300 in labor. If the cause is beam congestion in your area, there is no cost because it is a network-side issue Starlink manages through capacity upgrades.
Will this go away on its own?
Sometimes. If the cause is temporary cell congestion, it often improves as Starlink launches more satellites and adds capacity. Weather-related loss clears when the storm passes. But if obstruction or a damaged cable is the cause, it will not fix itself and will likely get worse over time as the obstruction grows or the cable degrades further.