Having issues with your Navitas golf cart controller? Whether your cart won’t move, throws fault codes, or acts erratically, this step-by-step troubleshooting guide will help you identify and fix common problems fast.
Bonus Tip: Many Navitas controller issues stem from low or failing batteries. Don’t buy new ones yet. Try this battery reconditioning course and bring your golf cart batteries back to life at home.
Introduction
Navitas AC and DC controllers are smart, efficient, and programmable. But like any electrical system, they can run into problems. This guide focuses on Navitas controller faults in golf carts like Club Car, Yamaha, and EZGO, and shows you how to diagnose and solve them.
Common Navitas Controller Problems and Fixes
1. Cart Won’t Move
If your cart won’t go forward or reverse:
- Battery pack: Check voltage—48V carts should read 50–52V fully charged.
- Key switch: Make sure it’s working and sending power to the controller.
- Run/Tow switch: On carts with a Navitas DC controller, make sure it’s set to “Run.”
- Solenoid: Listen for a click. No click = possible solenoid or wiring issue.
- Controller fault: Use the On-The-Fly programmer or Navitas app to check for fault codes.
2. Fault Code Appears on Navitas App
Use the Navitas App via Bluetooth or the On-The-Fly (OTF) controller to view fault codes. Here are common examples:
| Code | Description | Suggested Fix |
|---|---|---|
| 02 | Throttle Fault | Check throttle wiring or replace throttle sensor (MCOR/ITS) |
| 03 | Low Battery Voltage | Charge the battery pack or test for bad batteries |
| 04 | Motor Stall or Disconnected | Check motor cables and terminals |
| 05 | Overvoltage Protection | Check for incorrect charger or faulty battery pack |
| 07 | Solenoid Driver Fault | Replace solenoid or inspect for shorted wires |
| 09 | Speed Sensor Fault | Check speed sensor or replace it if no signal is detected |
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3. Controller Powers On But No Movement
If the controller lights up or connects to the app, but the cart doesn’t move:
- Throttle calibration: Reset via the Navitas app.
- Wiring issue: Inspect all connections between the throttle, solenoid, and motor.
- Wrong cart profile: Double-check the correct settings for your cart type (IQ, RXV, Drive, etc.)
4. Jerky Acceleration or Loss of Power
- MCOR or ITS sensor issue: Test throttle resistance using the Navitas app.
- Bad speed sensor: Especially on Club Car IQ or Yamaha AC systems.
- Controller heat: Prolonged use on hills can cause overheating. Let it cool and reduce throttle aggression settings in the app.
5. Navitas Controller Not Connecting to App
- Ensure Bluetooth is on and you are close to the controller
- Reset your phone’s Bluetooth and power cycle the cart
- Use the On-The-Fly module as a backup interface
Resetting Your Navitas Controller
To reset the controller:
- Turn the key off
- Put the cart in Tow mode
- Disconnect the main battery pack (positive or negative cable)
- Wait 5–10 minutes
- Reconnect battery, set cart to Run, and turn the key back on
Battery Testing for Navitas Systems
Use a voltmeter to check all batteries in the pack:
- 6V battery: 6.3–6.4V when full
- 8V battery: 8.3–8.4V when full
- 12V battery: 12.6–12.7V when full
If one or more are weak— try reviving them at home using this proven reconditioning method.
Tips to Prevent Navitas Controller Problems
- Use a compatible battery charger (especially with lithium setups)
- Secure all wiring from vibration and moisture
- Update firmware if recommended in the Navitas app
- Install a fan or heat sink for high-demand applications
When to Call Support or Replace
Replace the controller if:
- It fails to power up even after a reset
- You see repeated internal error codes (like EEPROM faults)
- Multiple tests confirm the controller is not sending output to the motor
Before buying a replacement, make sure your batteries aren’t the issue. Weak batteries can mimic controller failure symptoms.
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Conclusion
Navitas controllers are powerful, customizable, and reliable—but even they can run into problems. Most issues come down to wiring, throttle sensors, battery health, or speed sensors. Use this guide to pinpoint and solve issues fast.
And remember—many controller problems trace back to bad batteries. Don’t replace them yet. Learn how to recondition batteries at home with this easy course and keep your cart running strong.
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