Tesla Automotive Error Code CC_a021: How to Fix It

Q: What does Tesla error code CC_a021 mean?

Tesla error code CC_a021 indicates communication has been lost between your Tesla vehicle and the wall connector charging unit, typically due to installation issues, network connectivity problems, or electrical faults.

Q: Can I still charge my Tesla with CC_a021 error?

In most cases, you cannot charge your Tesla when the CC_a021 error is active, as it indicates a communication breakdown between the vehicle and charging equipment. Try alternative charging methods like Superchargers or mobile connectors.

Q: How much does it cost to fix Tesla CC_a021 error?

Costs vary depending on the cause. Simple fixes like resetting the connector cost nothing. Professional electrician service calls range from $100-300. Wall connector replacement can cost $400-600 plus installation.

Q: Is CC_a021 error covered under Tesla warranty?

Wall connector issues may be covered under Tesla's limited warranty if the unit is within the warranty period and the problem isn't due to improper installation or electrical issues on the customer's side.

Q: How often should I maintain my Tesla wall connector?

Inspect your wall connector monthly for physical damage and clean the charging port contacts quarterly. Have electrical connections checked by a qualified technician annually or if you notice any issues.

Abstract

The Tesla CC_a021 error code indicates that communication has been lost between your Tesla vehicle and the wall connector charging unit. This error typically occurs due to installation issues, network connectivity problems, or electrical faults in the charging system.