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RadWagon Error 30 Troubleshooting Guide

To troubleshoot an "Error 30" message on a RadWagon, perform a connector check to ensure all connectors are secure and in good condition.

This guide uses a 2019 RadWagon but the steps will be similar for other model years.

Tools Needed:

  • Flat side cutters
  • A camera
  • Zip ties

Connector Check Steps:

Perform the following steps on each connector until the error message is resolved.

  1. Get the bike ready for maintenance. Turn off the bike, remove the battery, and press MODE to discharge remaining power.

  2. Check the battery and battery mounting tray terminal contacts. If it's in good condition, reinstall the battery and turn on the bike to check if the issue is resolved. If the bike will not turn on, remove the battery and discharge remaining power.

  3. Check the connection between the battery and the controller. The battery connector is the large connector located near the bottom bracket. The connector is flat on one side and is black inside with two large prongs. Follow the steps below to check the connector.

  4. Locate and unplug the connector. Follow the cable from the part to the connector. Snip zip ties for easier access, then pull each side of the connector directly apart without twisting.

  5. Inspect the inside and reconnect. If the inside of the connector is wet, dirty, or damaged, take a photo and contact Rad Power Bikes Product Support. If it looks normal, line up the internal notch and pins (and external indicators) and press directly together without twisting.


  6. Check if the issue is resolved. Reinstall the battery and turn on the bike. If the issue continues, turn off the bike, remove the battery, and discharge remaining power.
  7. Repeat steps 4 through 6 on each connector listed below until the error is resolved. Once resolved, replace zip ties and trim to be flush and smooth. Test the bike fully and ride Rad!

Click the headings below to complete the connector check.

Display Connector
Location: Handlebar area

Color: Black inside

Untwist the metal portion of the connector, then pull directly apart without twisting. To reconnect, align the internal notch and pins, and twist the metal portions until the connector is secure.

Wiring Harness Connector
Location: Near seat tube

Color: Black inside


Motor Connector
Location: Near chainstay, on the left side of the bike

Color: Black inside

Taillight Connector (not applicable for models before 2019)
Location: Near seatstay

Color: Blue inside

Second Taillight Connector (not applicable for models before 2019)
Location: Back of the bike

Color: Blue inside


Left Brake Connector
Location: Handlebar - left side

Color: Red inside


Right Brake Connector
Location: Handlebar - right side

Color: Red inside


Throttle Connector
Location: Handlebar area

Color: Yellow inside


Headlight Connector
Location: Front of the bike

Color: Red inside


Pedal Assist (PAS) Sensor Connector
Location: Near seat tube

Color: Yellow inside


Warning_-_Transparent.png If you are not confident in your ability to safely and successfully perform all steps, we recommend having the work performed or checked by a local, certified, and reputable bike mechanic.


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