Used Honda Pilot 2016-2019: Fixing the MOST Common Infotainment System Audio Popping Noises
You’re cruising down the highway, the kids are finally quiet in the back, and then it happens—a loud, startling POP from the speakers that makes everyone jump. And then the whole infotainment screen goes black.
If you own a 2016-2019 Honda Pilot (or a 2018-2019 Odyssey or 2019 Passport), you might be all too familiar with this experience. The good news? You’re not alone. The bad news? This is a known issue, and fixing it can be frustrating. But don’t worry—we’ve dug through owner forums, technical service bulletins, and even class-action lawsuit documents to bring you the clearest picture of what’s going on and how to get it fixed.
TL;DR
The audio popping and crackling noises in 2016-2019 Honda Pilots are almost always caused by a loose connection in the MOST Bus network—the fiber-optic communication system linking your infotainment components. Honda has issued multiple Technical Service Bulletins (TSBs) and extended the warranty for this specific issue to 5 years or 60,000 miles for certain 2019-2020 models. The fix involves dealerships inspecting and replacing faulty Fakra connectors in the wiring harness. While some owners have had success with software updates or fuse resets, the permanent solution requires addressing the physical connection points in the system.
Key Takeaways
- The Problem: Audio popping/crackling, system crashes, and complete infotainment failure are tied to the MOST Bus network connecting your radio, amplifier, and navigation modules.
- The Culprit: Loose or faulty Fakra connectors in the wiring harness cause communication failures between system components.
- Warranty Coverage: Honda extended the warranty for this issue to 5 years/60,000 miles for 2019-2020 Pilots. Some 2018-2019 Odysseys and 2019 Passports are also covered.
- The Fix: Dealerships inspect the MOST Bus network, replace wiring harness sections, and replace Fakra connectors. This is not a simple DIY job in most cases.
- Seriousness: Beyond being annoying, this defect can cause safety features like the backup camera and even the speedometer to fail while driving.
Understanding the MOST Bus Network in Your Honda
So what exactly is the MOST Bus network? The name stands for Media Oriented Systems Transport, and it’s essentially the nervous system of your Pilot’s infotainment setup. It’s a fiber-optic ring that connects all your audio and navigation components—the head unit, amplifier, navigation module, and sometimes the rear entertainment system.
Here’s the catch: because it’s a ring, if one connection fails, the whole system can go down. Think of it like old Christmas lights—one bad bulb, and everything goes dark. In the Pilot, the culprit is almost always the physical connectors at the ends of those fiber-optic cables. Dealers identify the issue by looking for red and green connectors unique to the MOST Bus system.
What the Audio Popping Sounds Like and Why It Happens
Owners describe the noise as “popcorn,” “crackling,” or sometimes a loud, startling pop that sounds like something electrical is shorting out. And it’s not just the radio—the noise can happen even when the stereo is turned off.
The root cause? A loose connection or faulty wiring harness that creates intermittent contact. When the system loses communication, it tries to reconnect, which triggers the popping sounds. If the disconnection is severe enough, the entire infotainment system and even the gauge cluster can shut down and reboot.
“It’s not just an annoyance—it’s a safety hazard. Some owners report the popping is so loud it startles them, causing them to nearly lose control of the vehicle.” – Honda Owner Forum Post
The History of the Problem and Honda’s Response
Honda has known about this issue since at least March 2019, when they issued a Service News Article asking dealers to check for popping and crackling in 2018-2019 Odysseys and 2019 Pilots. But here’s the frustrating part: for a long time, Honda didn’t have a permanent fix.
Timeline of the Infotainment Issue
- March 2019: Honda issues first service bulletin acknowledging MOST Bus connection issues in 2018-2019 Odysseys and 2019 Pilots.
- March 2019: Class-action lawsuit filed against Honda for defective infotainment systems in these vehicles.
- June 2019: Amended lawsuit includes owners from 15 states.
- December 2019: Honda Service News article provides diagnostics tips for dealers but admits no complete fix is available yet.
- 2021: Honda extends warranty to 5 years/60,000 miles for certain 2019-2020 Passports and Pilots.
How the Dealership Fix Works
What to Expect When You Take Your Pilot to the Dealer
- Diagnostic Check: The dealer will inspect the MOST Bus network connections. They’re looking for damaged or loose Fakra connectors in the wiring harness.
- Software Updates: Some dealers will apply software updates first. This has helped some owners, but it’s rarely a permanent solution.
- Component Replacement: The actual fix involves replacing the faulty wiring harness sections or the Fakra connectors themselves. Some owners report that techs have to trace the entire harness “inch by inch” to find the offending connection.
- The Recurrence Issue: Here’s the problem Honda acknowledged in court documents: they simply replace defective parts with equally defective parts, meaning the issue can return.
Owner Experiences: The Good and The Bad
Owners on forums like Piloteers.org have reported mixed results:
- Success Stories: Some owners got permanent fixes after dealerships replaced the entire radio system or the wiring harness. One owner’s dealer fixed the issue by replacing the tuner and head unit, and the problem never returned.
- Frustration: Many owners report multiple trips to the dealership with no resolution. Some were told parts were backordered, while others were told there was “nothing wrong” after the issue was clearly documented on video.
- Temporary Workarounds: Some resourceful owners learned to remove and reinstall the fuse for the infotainment system as a temporary reset. One owner even used a USB keyboard to reset the Windows-based system.
What Years and Models Are Affected?
This issue isn’t limited to the Pilot. Here’s the full breakdown from Honda’s internal communications:
| Model | Model Years Affected | Warranty Extension |
|---|---|---|
| Honda Pilot | 2019-2020 (some 2016-2018 trims also reported issues) | Yes (5 years/60,000 miles) |
| Honda Odyssey | 2018-2022 | Yes (2018-2020 only) |
| Honda Passport | 2019-2021 | Yes (2019-2020 only) |
Note: If you own a 2016-2018 Pilot, the MOST Bus issue is still a known problem, but it may not be covered under the specific warranty extension. You’ll need to work with your dealer or contact Honda directly.
Do-It-Yourself Options and Temporary Fixes
If you’re not covered by the warranty and don’t want to pay dealership labor costs, here are a few things owners have tried:
- Fuse Reset: Locate the infotainment or audio system fuse in the driver’s side fuse box. Pull it for 30 seconds, then reinsert. This can reset the system and temporarily stop the popping.
- Battery Disconnect: Disconnecting the 12V battery for a few minutes can reset the entire electrical system, though this may clear some of your presets and settings.
- WiFi Updates: Some owners with 2019 models enabled their vehicle’s WiFi and connected to their home network. Automatic software updates were pushed to some vehicles this way, which helped stabilize the system.
- Check the Connectors: If you’re mechanically inclined, you can try to inspect the Fakra connectors yourself. They have distinct red and green colors. Make sure they’re firmly seated.
A word of caution: The MOST Bus system uses fiber-optic cables. They’re fragile, and forcing connections can damage them beyond repair. If you’re not 100% comfortable, leave this one to the pros.
Comparison of Infotainment System Repair Approaches
| Method | Cost | Difficulty | Success Rate | Best For |
|---|---|---|---|---|
| Dealer Software Update | $0 (under warranty) or $100-200 | Easy | Moderate | Minor glitches, early stages |
| Dealer Fuse Reset | $0 (DIY) | Easy | Low (temporary) | Quick emergency fix |
| Dealer Connector Replacement | $0 (under warranty) or $400-800+ | Professional Required | High | Permanent fix for MOST Bus issue |
| Dealer Harness Replacement | $0 (under warranty) or $1,000+ | Professional Required | Very High | Severe or recurring problems |
| DIY Connector Inspection | $0 (if careful) | Moderate | Variable | Understanding the problem |
Frequently Asked Questions
What causes the popping noise in my 2019 Honda Pilot’s speakers?
A loose connection in the MOST Bus network—the fiber-optic system connecting your infotainment components—is the root cause. This creates intermittent communication failures that result in popping and crackling sounds.
Is there a recall for Honda Pilot audio popping issues?
There is no formal recall, but Honda has issued multiple Technical Service Bulletins (TSBs) and extended the warranty to 5 years/60,000 miles for certain 2019-2020 Passports and Pilots affected by this issue.
How do I fix the crackling sound in my Honda Pilot’s speakers?
The permanent fix requires a dealership to inspect the MOST Bus network and replace faulty Fakra connectors or wiring harness sections. If your vehicle is under warranty, this should be covered at no cost to you.
Can I fix the popping noise myself?
You can try resetting the infotainment system by pulling the fuse or disconnecting the battery, but these are temporary solutions. The permanent fix requires professional work on the wiring harness and connectors.
Are all Honda Pilots affected by this issue?
The MOST Bus issue primarily affects 2019-2020 Pilots, though some 2016-2018 models have also reported similar problems. 2021 and newer models appear to have more stable systems.
What is the MOST Bus network in my Honda?
MOST stands for Media Oriented Systems Transport. It’s a fiber-optic network that connects the radio, amplifier, navigation, and rear entertainment systems. If one connection is loose, the whole system can fail.
How do I know if my Pilot is covered by the warranty extension?
Check with your local Honda dealer and provide your VIN. The warranty extension covers the MOST Bus connectors for 5 years or 60,000 miles from the original purchase date for 2019-2020 Pilots.
The audio popping issue in the 2016-2019 Honda Pilot is frustrating, but it’s also well-documented. Honda knows about it, dealerships have a process to fix it, and in many cases, it’s covered by warranty. The key is persistence—document the problem, show up to the dealer with clear evidence (video helps), and don’t accept “we couldn’t replicate it” as a final answer.
If you’re out of warranty, the fix might be expensive, but compared to the cost of replacing the entire vehicle or living with an unreliable system, it’s often worth it.
Have you dealt with the popping noise in your Honda? What finally fixed it for you? Drop your experience in the comments below.
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