My 2016 EZGO RXV keeps throwing a motor temp sensor fault and going into limp mode. Seriously, what gives?
Response
I had the exact same issue with my 2015 RXV. I was about to lose it until I replaced the controller. It’s been a game-changer.
Solutions that worked for users
| Solution | Users Who Found Success | Personal Experience | Estimated Cost (USD) | Time Needed (Minutes) |
|---|---|---|---|---|
| Replace Controller | 2 | Replaced controller, issue solved | $200-$400 | 30-60 |
| Check Wire Harness | 1 | Checked wire harness, issue fixed | $0-$50 | 10-20 |
| Use a Resistor to Bypass | 1 | Used a 700-ohm resistor | $5-$10 | 10-20 |
Symptoms
- Cart goes into limp mode
- Motor temperature warning on display
- Reduced speed and performance
Possible Causes
- Faulty motor sensor
- Wire harness issues
- Controller malfunctions
Solutions that Worked
1. Replace Controller
What I Did:
Replaced the controller on my 2015 RXV.
Outcome:
The cart is back in service without any issues.
Personal Experience:
After replacing the controller, the motor temp sensor fault disappeared, and the cart has been running smoothly.
Estimated Cost:
$200-$400
Time Needed:
30-60 minutes
Steps:
- Disconnect the battery to ensure safety.
- Locate the controller, usually found under the seat or dashboard.
- Take a picture of the wire connections for future reference.
- Disconnect all the wires carefully.
- Remove the old controller by unscrewing it from its mount.
- Install the new controller and secure it with screws.
- Reconnect all the wires according to the picture you took earlier.
- Reconnect the battery and test the cart.
Expert Tip:
Replacing the controller should be your last resort after you’ve tried other solutions and the problem persists. Always consult your cart’s manual for specific instructions.
2. Check Wire Harness
What I Did:
Checked the wire harness for any issues.
Outcome:
The cart is back in service without any issues.
Personal Experience:
After checking the wire harness, I found a loose connection that was causing the issue.
Estimated Cost:
$0-$50
Time Needed:
10-20 minutes
Steps:
- Disconnect the battery for safety.
- Locate the wire harness, usually found near the motor or controller.
- Inspect each wire for any signs of wear, tear, or disconnection.
- Repair or replace any faulty wires.
- Use a multimeter to check for continuity.
- Reconnect the battery and test the cart.
Expert Tip:
Always start your troubleshooting by checking the wire harness for any signs of wear, tear, or disconnection. A multimeter can be a handy tool for this.
3. Use a Resistor to Bypass
What I Did:
Used a 700-ohm resistor to bypass the faulty sensor.
Outcome:
The cart is back in service without any issues.
Personal Experience:
After using the resistor, the cart stopped showing the motor temp sensor fault.
Estimated Cost:
$5-$10
Time Needed:
10-20 minutes
Steps:
- Disconnect the battery for safety reasons.
- Locate the sensor wires, usually found near the motor.
- Disconnect the sensor wires.
- Connect a 700-ohm resistor across the sensor wires.
- Use electrical tape to secure the connection.
- Reconnect the battery and test the cart.
Expert Tip:
If you decide to use a resistor to bypass the sensor, make sure you know the risks involved and consult the manual for your specific model. This is a temporary fix and should not be used long-term.
Cart Models Where This Worked
- EZGO RXV 2015
- EZGO RXV 2014
Safety info
- Before attempting any of these solutions, consult your cart’s manual for specific instructions and safety guidelines.
- If your cart is still under warranty, consult the manufacturer or your dealer before attempting any DIY solutions.
- Always disconnect the battery before performing any electrical work on your cart to avoid the risk of shock or injury.