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

Are you feeling frustrated and confused with your Tesla wall charger not working?? Don’t worry, I am here to help! Instead of feeling discouraged, let’s work together to find the meaning behind the fault codes appearing on your Tesla wall connector.

On your Tesla’s screen, you may see error alerts such as CC_a001, CC_a002, CC_a003, CC_a004, and more. The green, yellow, and red lights on the wall connector can also give you an indication of what is causing the problem.

I understand that these error messages can be overwhelming, but don’t give up just yet. Keep reading as I explain the possible causes of these fault codes and offer solutions to get your wall connector up and running smoothly again.

So let’s dive into it and solve these issues together!

Tesla Wall Charger Not Working  - What Could Be Going Wrong?
Table of Contents show

Usual Reasons Behind a Tesla Wall Chargers Not Working and How to Fix Them!

In this section, I’ll bring out the solutions and give you the causes of why the wall contactor not operating as it did previously. Let me show you the Tesla wall charger troubleshooting below!

1. Power Source Problems

As Tesla charging error no power occurs, the wall charger might struggle to operate. There are a lot of issues that happen due to power source errors. Let me share some of them: 

Problem #1: Tesla Wall Charger Stopped Working

The charging communication can sometimes get lost which basically causes power source errors. In that case, you’ll notify on the touchscreen with alerts like CP_a046, CP_a053, and CP_a055. Here’s how you can resolve the error:

  • Check the wall connector lights, displays, and other indicators to understand if the wall connector getting power or not.
  • After that, connect the external charging equipment properly to gain the power source.
  • if it still not operating, either the wall connector is dead or other issues. You’ll need to contact Tesla Service Center to fix the bug.

Problem #2: 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.

Problem #3: 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 the 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.

Problem #4: 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.

Problem #5: 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 to match the light numbers, then get into the Tesla and connect Wi-Fi SSID to fix the error.
  • Place the connector in the Tesla and check.

Problem #6: 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.

2. Charger Not Found by Tesla Vehicle

Tesla not charging at home wall connector is a common sign of sensor-related issues that occurs when the car can’t find the charger. This shows an alert like CP_a043 on the screen as the charge port can’t detect the charger due to the wrong position. Fix the issue by doing this:

  • Close the charge port door and again open it by clicking the Unlock/Open button on the touchscreen.
  • Insert the wall charger into the Tesla and check the indicator.

3. Connection Issues

The car sometimes has a connection error that can’t connect the wall connector and the vehicle. And that’s why the screen shows alerts like CC_a015, CC_a016, CC_a017, CC_a018, CC_a019, and CC_a29. Solve the issue by doing this:

  • Disconnect the wall connector from the Tesla and again connect it.
  • Turn the circuit breaker OFF and then sit there 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 can communicate with the charger or not.
  • If nothing works, replace it.

4. Malfunctioning Hardware

Unlike the usual state, the hardware can face issues. That happens a lot due to 4 main causes, and these are –

  • The Tesla charging adapter not working.
  • Disconnected thermal sensor.
  • Circuit failure (self-test of internal ground fault).
  • Overheat.

Based on the causes and problem, here are the repair techniques below:

Problem #1: Wall Connector Requires Servicing

When the hardware is facing issues, the touchscreen gives alerts like CC_a004, CC_a010, CC_a014, CC_a020, CC_a025, CC_a026, and CC_a027. Let’s get into the solution to these:

  • 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 Center.

Problem #2: Wall Charger Getting Hot (CC_a011 & CC_a013)

These alerts mean 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 or anything causing the wall connector to get hot. If you find a towel or piece of cloth that covers it, remove that quickly.
  • Ensure the temperature is under 100°F or 38°C.
  • See if the charger works or not.

Problem #2: Overheated Wall Charger And Outlet (CC_a012)

This alert indicates the wall connector or Tesla outlet is at a high temperature. That’s why it can’t able to charge the car. 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.

5. Software Glitches

Sometimes the wall connector requires an update and during this period it shows a glitch issue. To fix the bug, you must update the latest firmware file. If you are not able to download it, do the following step:

  • Go to the official website of the wall connector.
  • Download the file named “Firmware 22.41.2.”. Be sure to check the Tesla wall charger Wi-Fi setup.
  • Connect the wall connector to your Wi-Fi router. 
  • Go to the update page using a reliable browser and type “” or “”.
  • Click on “choose file” and upload the firmware file.
  • Hit “upload” and wait for up to 60 seconds.
  • Once the update is completed, you’ll see the message called “success”. After that, the wall connector will reboot itself.

Tesla Wall Charger Error Codes & Its Solutions!

Apart from the error alerts, there are some fault codes that most notice when the charger suffers from issues based on the wall connector type (Gen 1, 2, and 3). Let me explain it down below:

Gen 1 Wall Connector

As it is the old version, the Gen 1 wall connector beam a red or green light to indicate errors. Let me share all the error codes, causes, and fixes below:

Error #1: Solid Green Light

The solid green in the top light indicates the vehicle not charging but the wall connector is powered. If that happens, plug the wall charger properly into the Tesla’s charge port.

Error #2: Red Light Flashing One Time

If the Tesla charger flashing red 1 time, it indicates the current leaking from an unsafe area or ground issue. To fix that, simply press the RESET button after 15 minutes (as it can automatically reset). Then, wait for it to complete the task.

Error #3: Red Light Flashing Two Times

This occurs when the wall connector not passing the self-test or faces internal issues. Here’s how to fix it:

  • Reset the wall connector by pressing the RESET button. 
  • Connect the plug tightly to the Tesla. 
  • Power off the High-Power Wall Connector.
  • Turn it to the ON position.

Error #4: Red Light Flashing Three Times

This means the contactor fails to operate and causes the wall charger to not work decently. If that happens, fix the Tesla charger blinking red 3 times like this:

  • Detach the plug of the wall connector from the Tesla.
  • Wait for 10 – 12 seconds.
  • Plug it back into the Tesla.

Error #5: Red Light Flashing Four Times

The red light can blink 4 times when the ground is lost or not detected. You can easily solve it by checking the power outlet to confirm whether it’s rightly grounded or not. Then, inspect if the Hot and Neutral pins are wired or not. It should solve the error!

Error #6: Red Light Flashing Five Times Or More

If the red light is flashing 5 times or above, it means the wall connector facing serious issues that need servicing from an expert. To debug it, get help from the Tesla Service Center.

Gen 2 Wall Connector

This kind of wall connector can face severe issues and show indications through the light. Each Tesla charger lights meaning varies a lot based on flashing times or type. To understand it better, look at the error code via LED lights:

Error #1: Streaming Green And One Blink Yellow Light

When the temperature is high in the wall connector, it causes reduced charging current. Due to this, the indicator blinks one time in yellow and streams green. To fix that, attach the plug in the charge inlet using force. Plus, take out the object that covers the wall connector.

Error #2: Streaming Green And Two Blinks Yellow Light

This occurs when the charging current is reduced as temperature raises in the outlet or input terminals to the wall connector. You can troubleshoot it by detaching anything that covers the wall charger.

Error #3: Streaming Green And Three Blinks Yellow Light

It usually happens when the temperature gets higher in the wall connector which reduces the charging current. To solve it, wipe out dust from the charge port and ensure the wall connector isn’t covered which causes the heat source.

Error #4: Solid Red Light

If the wall connector’s hardware fails to operate, it shows red solid light in the indicator. Consult it via the Tesla Service Center to debug.

Error #5: Red Light One Blink

Tesla charger blinking red one time is a common indicator that occurs when the Line or Neutral to ground connection seems faulty. Here’s how to resolve the issue:

  • Disconnect and connect the wall connector from the Tesla. 
  • Shut off the circuit breaker.
  • Sit for 10 seconds to turn it on later.

Error #6: Red Light Two Blinks

This means there is no ground connection in the wall connection. To fix the error, check if the ground connection is accurate or not. If needed, get help from an expert electrician.

Error #7: Red Light Three Blinks

When you see 3 flashes of red light, it means the input miswired in the wall charger. You can fix it by connecting the wires of the wall power and wall connector properly. Then, check if it charges or not.

Error #8: Red Light Four Blinks

If you are wondering “why is my Tesla charger flashing red 4 times“, it occurs due to an under-voltage or overvoltage issue. This can be fixed via a skilled technician.

Error #9: Red Light Five Blinks

The overcurrent problem is why the LED indicator blinks 5 times in red light. You need to lessen the Tesla’s charge current setting to fix the bug.

Error #10: Red Light Six Blinks

Due to the communication fault between the wall charger and the vehicle, the indicator LED turns red and blinks 6 times. If that occurs, try this troubleshooting technique:   

  • Plug out the wall connector.
  • Let it sit for 10 seconds. 
  • Then, insert it back into the vehicle.

Error #11: Red Light One Blink And Top Light On

This indicates the over-temperature fault (latch-off). You can easily fix the heat source by removing covers from the wall connector, vehicle connectors, and wall plug.

Error #12: Red Light Two Blinks And Top Light On

Tesla wall charger blinking red 2 times while the top light stays on in green indicates non-Tesla trying to connect to noncompatible input distribution. Ensure the input distributions are compatible (1-phase distribution or 400V and 3-phrase distribution)

Error #13: Red Light Three Blinks And Top Light On

It means inaccurate rotary switch settings. That’s why the wall connector blinks the red light 3 times, and the top light turns on green. You can debug it by consulting the Tesla Service Center.

Error #14: Red Light Four Blinks And Top Light On

This signals more than one wall connector is set to the leader. To resolve the issue, set the one wall connector to the Follower. Then, all other linked connectors might be set to the follower (position F).

Error #15: Red Light Five Blinks And Top Light On

The red light will blink 5 times and the top light goes on if more than 3 wall connectors are set to Follower. Just shift one or more wall connectors to other circuits and disconnect them from the Circuit Breaker Sharing Network to fix it.

Error #16: Red Light Six Blinks And Top Light On

It occurs when the networked wall connectors contain diverse max current abilities. You’ll need the help from Tesla Service Center to fix the bug.           

Gen 3 Wall Connector

This is the latest version that shows errors using the LED indicator in red shade or no light. Let me help you by giving the error type based on light condition (solid, flash, or no light):

Error #1: No Light In Indicator

If the indicator doesn’t lighten up, it means a power supply error. To fix that, you need to 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).

Error #2: Solid Red Light

The Tesla charger red light in solid form indicates an internal issue that causes the charger to get disabled. You can fix it by dropping the circuit breaker to the Off position. Next, wait for around 5 seconds and then turn it on.

Error #3: Red Light Blink One Time

The one flash in the red light indicates a fault in the circuit due to the interruption of a risky current path. To solve it, try this:

  • 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 errors, consult an electrician.

Error #4: Red Light Blink Two Times

This means the earth or ground assurance fault that occurs when the high earth resistance is detected. To fix it, do the following steps:

  • Just 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.

Error #5: Red Light Blink Three Times

The light can turn red and blink 3 times if a high temperature is detected. During this, the car will limit or disable the charging. To debug it, take out the wall connector from the wire box and adjust the conductors to an accurate size.

Error #6: Red Light Blink Four Times

This issue occurs in the wall connector when it loses the internet connection. You might’ve changed the password of your Wi-Fi which causing this kind of error. 

Just 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.

Error #7: Red Light Blink Five Times

It indicates the power-sharing communication error which causes the charging to reduce. Do the given steps to fix the issue:

  • 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.

Error #8: Red Light Blink Six Times

If you are wondering “why is my Tesla charger blinking red 6 times“, know that it’s due to overvoltage or poor grid detection. You can troubleshoot it by doing the given steps:

  • Ensure the power supply is nominal 200 – 240 volts. 
  • To read the voltage at the terminal block, use a multimeter by taking out the wall connector from the wire box.

Error #9: Red Light Blink Seven Times

Due to the overcurrent that Tesla detects, the wall connector can blink red light 7 times. If that occurs, do this:

  • Lessen the Tesla charge current setting. 
  • Record the Tesla VIN and time of the fault code to contact Tesla and fix the error.

Note: The blue light on Tesla wall charger stays solid when it’s waiting for charging. 

Additional Troubleshooting Tips

  • If the wall connector seems good but Tesla not charging, then use a portable charger for Tesla on the charge port and check if it charges or not. If the car charges, that means you have to replace the wall connector. 
  • Be sure to use the right type of circuit breaker to match the grid and get desired output on charging. If you don’t know about it, learn what size breaker for Tesla wall charger to use here.
  • Use the standard size of stranded wire (4 mm2 – 25 mm2) or solid wire (1.5 mm2 – 25 mm2) to use in the wire box. Or else, it’ll cause power source issues on the wall connector.

Frequently Asked Questions

1. What does blue light mean on Tesla charger?

The Tesla charger blue light solid means the wall connector is communicating to find any signal of charge. It indicates the device is getting ready and waiting for the charge. That’s what is blue light of Tesla wall connector!

2. Where is the reset button on a Tesla wall charger?

You’ll find the reset button on the left side of the wall connector. The button is round and red in shade with a RESET letter.

3. How do I know if my Tesla wall connector is working?

If the indicator isn’t flashing in red, yellow, stays solid green, or has no light, then it simply means the wall connector is okay.


You’ve now learned how to troubleshoot and fix the most common issues that may be the reason behind your Tesla wall charger not working! Don’t hesitate to put your new knowledge into practice and see the results for yourself.

With these solutions, you’ll be able to keep your Tesla charged and ready to go without any interruptions.

Remember, there’s always more to learn, so keep exploring and expanding your knowledge. Who knows, you may be able to apply what you’ve learned to troubleshoot other issues you may encounter with your Tesla in the future. On that note, . I highly recommend finding out why Tesla won’t charge at Supercharger sometimes.

With your newfound skills, you’ll be able to take on any challenge that comes your way!

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