Tesla Wall Charger Not Working  – What Could Be Going Wrong?

Seeing the beams in Wall Connector while the Tesla show fault codes can easily trigger you. But wait, I’ve got the solutions that will help.

On the screen, you’ll see all the error codes like CC_a001, CC_a002, CC_a003, CC_a004, and so on. The green, yellow, and red light are some of the signs (of Wall Connector) that indicates the Tesla wall charger not working.  

To fix the fault codes, keep on scrolling as I’m about to explain the solutions with causes. Let’s Dive into It!

Tesla Wall Charger Not Working  - What Could Be Going Wrong?

If Tesla Wall Charger Not Working, Try These Techniques!

Under this section, I’ll bring out the solutions and give you the causes of why Wall Contactor not operating as it did previously. Let’s Go!

Ground Not Detected (CC_a001)

It simply means the Wall Connector has no ground connection since this can’t be able to detect. Here’s how to fix it: 

  • Check the ground connection through an electrician or yourself.
  • If it doesn’t solve, remove the Wall Connector, and install it properly. Be sure to check Tesla Supercharger vs Destination charger to get the right ideas about the best alternative.

Issue On Ground (CC_a002, CC_a003, & CC_a005)

This error occurs due to a ground fault where power is leaking through an unsafe path. Here’s what to do:

  • Locate Tesla Wall Connector reset button on the bottom right area.
  • Hold it for 2 – 3 seconds so that the red-light switch to green and solve the error.
  • Turn the circuit breaker to OFF.
  • Sit for 10 seconds. 
  • Then, turn the circuit breaker On.

Not Able to Charge (CC_a004, CC_a010, & CC_a014)

These error alerts that pop on the screen informing that the charger can’t be able to charge in other words wall connector hardware issue. This happens due to 3 causes, and these are:

  • Not working contactor.
  • Disconnected thermal sensor.
  • Circuit failure (self-test of internal ground fault).

Other than these, this problem occurs when hardware faces errors. Let’s get into the solution to this issue:

  • Disconnect the wall connector from the Tesla. Wait for 10 seconds and then reconnect it. Check if it’s charging or not.
  • If not, turn OFF the circuit breaker. Let it sit for 10 – 12 seconds and then turn the circuit breaker in the ON position. After that, reconnect the Wall Connector to the Tesla.
  • Still, facing the same issue? Then, inspect wires and if possible, connect them properly after wearing safety equipment. Once it restores power to the Wall Connector then check if it is working or not.

Note: If nothing helps solve the internal bug, then update your Tesla software and app. Or get help from the Tesla Service Centre.

Over Current Protection (CC_a006)

The Wall Connector sometimes gets an overcurrent that causes it to not charge properly. Take a look at the given troubleshooting:

  • Lessen the current in the vehicle’s charge setting.
  • If it doesn’t solve the error, then contact the expert for service.

Too Much or Less Voltage (CC_a007 & CC_a008)

These error alerts simply mean the input voltage of the Wall Connector is too high or low which doesn’t suit the rating. To fix that, follow the given steps:

  • Attach all the connections tightly to the breaker box.
  • No matter how many watts does a Tesla use, just test out the voltage in the wall connector from L1 to ground, L2 to ground, and L1 to L2. Also, cover the wall connector and beaker. 
  • Drop the breaker and put the cover back on the wall connector. Then, close the breaker.
  • Click the button on the Tesla plug and continue pressing it. Now, you’ll see green lights beaming based on the number and breaker circuit (5-green for 60A and 4-green for 50A). Next, it’ll illuminate flashing blue.
  • If it isn’t organized matching the light numbers, then get into the Tesla and connect Wi-Fi SSID to fix the error.
  • Place the connector to the Tesla and check.

Line & Neutral Swapped With Each Other (CC_a009)

A lot of time the input wires are attached incorrectly which causes the Wall Connector to not operate and charge. Fix it by doing this: 

  • Inspect and look closely at the wall power and Wall Connector wire if something seems wrong.
  • Swap the wire that seems wrongly fit using the appropriate gears.

Wall Connector or Charge Handle Overheated (CC_a011 & CC_a013)

This literally means the Wall Connector or charge handle is tremendously hot and can’t be able to charge. Here’s how to fix it:

  • Check if the heat source if anything causing the Wall Connector. If anything covers it, remove that quickly.
  • Ensure the temperature is under 100°F or 38°C.
  • See if the charger works or not.

Wall Connection Overheated (CC_a012)

High temperature in the Wall Connector and Tesla outlet can cause issues like unable charging. Resolve it by doing the following steps:

  • Inspect if the plug contains dust or particles that block the path.
  • Next, fully insert the plug into the receptacle or outlet.
  • Remove anything that covers the Wall Connector.

Tesla Connection Bug (CC_a015, CC_a016, CC_a017, & CC_a018)

The car sometimes has a connection error that can’t connect the Wall Connector and vehicle. Solve the given issue by doing this:

  • Disconnect the Wall Connector from the Tesla and again connect it.
  • Turn the circuit breaker OFF and then let it sit for 10 seconds. Then, turn it ON to connect the Wall Connector to Tesla.
  • Next, plug the Tesla into another Wall Connector or Mobile Connector to see if the Tesla is able to communicate with the charger or not.
  • If nothing works, replace it.

Wall Connector (Charger) Fault Codes & Its Fixes!

Apart from the error alerts, there are some fault codes that cause the charger not to work based on the wall connector type (Gen 1, 2, and 3). Let me explain it down below:

Gen 1 Wall Connector

Error CodesCausesSolutions 
Green lights at the top blinking Not charging but Wall Connector is powered.Plug the Wall Connector properly into the Tesla.
1 flashCurrent leaking from an unsafe area.Press the RESET button after 15 minutes (as it can automatically reset). Wait for it to complete the task.
2 flashesWall Connector not passing self-test.Fix The Blinking Red 2 Times:Reset the Wall Connector.Connect the plug tightly to the Tesla.Power OFF the High-Power Wall Connector and turn it ON.
3 flashesContactor failure.Fix Tesla Charger Blinking Red 3 Times:Detach the plug of the Wall Connector from the Tesla.Wait for 10 – 12 seconds.Plug it back into the Tesla.
4 flashesThe ground is lost.Check if the power outlet is rightly grounded or not. Inspect if the hot and neutral pins are wired or not. After that, check if it fixes or not.
5 flashes or moreWall Connector needs servicing.Get help from the Tesla service center.

Gen 2 Wall Connector

Gen 2 Wall Connector table

Gen 3 Wall Connector

Error CodesCausesSolutions
No lightIssue in power supply.Ensure the power supply is on. Record the voltage readings (like L1 to L2 or Neutral, L1 to Ground, and L2 or Neutral to Ground). 
Solid red lightInternal bugs.Drop the circuit breaker to Off. Wait for around 5 seconds and turn it on.
1 red light blinksFault on the ground.Check the cable, Wall Connector, handle, and Tesla charger port to locate water or dust. Then, clean it using a cotton bird or a small brush. If still showing error, consult the electrician.
2 red light blinksGround assurance issue.Inspect the physical connections (wire box terminals, electrical panels, and junction boxes). Check if the ground connection is rightly placed. If anything seems wrong, repair it via an expert. 
3 red light blinksThe high temperature is detected.Take out the Wall Connector from the wire box and adjust the conductors to accurate size.
4 red light blinksLost internet connection.Enter the new password that you have changed recently. And ensure the Wi-Fi signal range is fine. Use a mobile device to update the Wi-Fi settings.
5 red light blinksCommunication error.Inspect the Wi-Fi range to ensure Tesla is finding the connection. Then, use a mobile device to re-link the Wall Connector to power-sharing.
6 red light blinksOvervoltage detected.Ensure the power supply is nominal 200 – 240 volts. To read the voltage at the terminal block, use a multimeter by taking out Wall Connector from the wire box.
7 red light blinksTesla overcurrent detected.Lessen the Tesla charge current setting. Record the Tesla VIN and time of the fault code to contact Tesla to fix the error.

Note: All red light pauses for 1 second and then repeats to blink.

Wrap Up

That’s what to do when you find your Tesla wall charger not working! Now, it’s your turn to troubleshoot the error by trying it in real life. Hope you find this guide handy to be able to solve the wall charger error and charge the Tesla nonstop. Good Luck! 

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