Tesla Automotive Error Code CC_a045: How to Fix It

Easy 15-45 minutes Medium Severity Verified June 2026
Summarize with ChatGPTSummarize with ClaudeSummarize with Perplexity Add as Preferred Source on Google
Error Code
CC_a045
Brand
Tesla
Product Type
automotive
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-45 minutes
Tesla error code CC_a045 indicates that your vehicle's charging session was interrupted because the pilot signal — the communication line between your car and the charging equipment — was lost or became unstable. This signal is essential for coordinating safe power delivery between the charger (EVSE) and your Tesla. The issue can stem from a faulty charge cable, a problem with the charging station, a dirty or damaged charge port, or a software glitch in the vehicle itself.
Ad

Tools You'll Need

How to Fix Error Code CC_a045

  1. Stop Charging and Unplug Safely

    Never yank the charge cable while the car is actively charging. Always use the touchscreen or Tesla app to stop charging first to avoid damaging the charge port or cable.

  2. Inspect the Charge Port and Connector

    Do not insert any metal objects or spray compressed air directly into the charge port. Do not attempt to bend any pins yourself, as this can cause further damage.

  3. Try a Different Charging Cable or EVSE

  4. Perform a Soft Reboot of the Touchscreen

  5. Power Cycle the Vehicle Completely

    Ensure the car is in Park and the charge cable is unplugged before initiating a full power off.

  6. Check for a Pending Over-the-Air Software Update

  7. Try Charging at a Tesla Supercharger

  8. Contact Tesla Service if the Problem Persists

    Do not attempt to open the high-voltage battery or onboard charger enclosure yourself. Tesla vehicles operate at high voltages that are immediately life-threatening.

Parts You May Need

Tesla charge port assembly
Check Price on Amazon
Level 2 EVSE charging cable
Check Price on Amazon
Tesla Wall Connector (Gen 3)
Check Price on Amazon
Tesla charge port assembly
Check Price on Amazon
Level 2 EVSE charging cable
Check Price on Amazon
Tesla Wall Connector (Gen 3)
Check Price on Amazon
Tesla charge port assembly
Check Price on Amazon
Level 2 EVSE charging cable
Check Price on Amazon
Tesla Wall Connector (Gen 3)
Check Price on Amazon
Ad

When to Call a Professional

You should contact Tesla Service directly if: (1) the error persists after all reboot and reset steps, (2) the charge port pins appear visibly bent, corroded, or damaged, (3) the error appears even at Tesla Superchargers, (4) the vehicle logs the fault repeatedly across multiple charging locations, or (5) your Tesla app shows additional related fault codes. Repairs involving the onboard charging unit, charge port assembly, or high-voltage wiring must be performed exclusively by a Tesla-certified technician due to life-threatening voltage levels.

Frequently Asked Questions

What does Tesla error code CC_a045 mean?
CC_a045 means your Tesla detected a loss of the pilot signal during a charging session. The pilot signal is a low-voltage communication line between the EVSE (charger) and your car that coordinates safe power delivery. When this signal drops or becomes unstable, the car automatically stops charging to protect both the vehicle and the charging equipment.
Can I still drive my Tesla after getting error CC_a045?
Yes. CC_a045 is a charging communication error and does not affect the vehicle's driveability. You can drive normally, but you should address the charging issue before your battery state of charge becomes critically low. Use the Tesla app to monitor your remaining range.
Is CC_a045 caused by a faulty Tesla or a faulty charger?
It can be either. The most common cause is actually the EVSE (home charger or third-party public charger) sending an unstable or interrupted pilot signal, not the Tesla itself. Trying a different charging cable or charging at a Tesla Supercharger is the quickest way to determine which side is at fault.
Will Tesla fix CC_a045 for free under warranty?
If a hardware defect in the charge port or onboard charger is confirmed to be the cause, and your vehicle is within Tesla's New Vehicle Limited Warranty (typically 4 years/50,000 miles for the basic warranty), the repair is likely covered at no cost. Schedule service through the Tesla app and provide the error history for the best outcome.
How do I prevent Tesla error CC_a045 from happening again?
Keep your charge port clean and dry, avoid repeatedly plugging and unplugging aggressively, ensure your home EVSE is professionally installed and on a dedicated circuit, keep your Tesla's software up to date, and periodically inspect your charging cable for signs of wear or damage. Using a Tesla-branded Wall Connector for home charging also reduces compatibility-related pilot signal issues.

Related Error Codes