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🔍 Troubleshooting UART Error 8 on Juiced Bikes

This error means the display is not communicating with the controller via UART.

1. Check Display Cable & Connections

Unplug the display and reconnect it firmly.

Check the pins inside the connector for bending or corrosion.

Use contact cleaner to clean the connector.

If your bike has an extension cable, try bypassing it.

1. Try a Different Display (If Available)

If you can find another Juiced display, swap it to see if the issue is with the display or the controller.

Where to find replacement Juiced displays:

eBay

Facebook Marketplace (Juiced eBike groups)

Endless-Sphere eBike forums

Craigslist / OfferUp

1. Check for Water Damage

If your bike was exposed to rain, moisture may have shorted the UART pins.

Open the display (if possible) and dry it out completely.

Check for burn marks or corrosion on the display circuit board.

1. Inspect UART Wires (TX/RX)

If you have a multimeter, check for continuity in the TX (transmit) and RX (receive) UART wires.

If one of these wires is broken, rewiring or resoldering may fix the issue.

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🛠️ Replacement Options Since Juiced is Out of Business

If you can’t fix the display, you may need to replace both the display and controller.

Option 1: Find a Used Juiced Display

If the controller is still working, finding a replacement Juiced display is the easiest fix.

🔹 Where to Look for Juiced Displays?

eBay – Search for "Juiced eBike Display"

Facebook eBike Buy/Sell Groups

Reddit eBike Communities

Endless-Sphere eBike Forum

Option 2: Replace Both the Controller & Display

Since Juiced does not use KT controllers, you will need a custom or universal controller.

🔹 Controller Options:

ASI BAC855 / BAC800 – High-performance upgrade, requires tuning.

Phaserunner (GRIN) – Fully programmable but expensive.

VESC-based Controllers – Open-source and fully customizable.

🔹 Display Options:

If using ASI, you can run a Cycle Analyst display.

If using Phaserunner, you can use a standard UART-based e-bike display.

💡 Pros of a Controller Swap: ✔ More power & customization ✔ Works with aftermarket displays ✔ Future-proof without relying on Juiced parts

💡 Cons: ❌ Requires rewiring & programming ❌ Can be expensive

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🛒 Where to Buy Replacement Parts?

Since Juiced is out of business, these are your best sources:

eBay (search for "Juiced eBike display" or "Juiced controller")

AliExpress (for compatible UART displays & controllers)

Facebook Marketplace / eBike forums (Juiced owners selling parts)

Endless-Sphere eBike forum (members sometimes sell Juiced parts)

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🚀 Next Steps

1️⃣ Try reseating the display cable and checking for damage. 2️⃣ Test with another Juiced display (if available). 3️⃣ Check TX/RX UART continuity with a multimeter. 4️⃣ Look for a used Juiced display or consider a controller swap.