TESLA-CP_A066 minor Tesla Charge Port (CP)

Charging Equipment Not Ready (Activation or Authorization Required)

The TESLA-CP_A066 (Tesla Charge Port (CP)) EV fault code means: Charging Equipment Not Ready (Activation or Authorization Required). This is a minor severity code.

My Garage →
Keep driving?
Yes, but fix soon
DIY difficulty
easy
Estimated cost
$0 — this is almost always a station activation/authorization step, not a fault. If the vehicle also won't charge at known-good chargers, Tesla service diagnoses from there.
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Common Symptoms

  • Alert on the touchscreen: "Charging equipment not ready — See equipment instructions to start charging"
  • Vehicle is plugged in but charging never begins
  • Typically appears at third-party public charging stations
  • Driving is unaffected

Probable Causes (Ranked by Likelihood)

  • The charging station requires activation or authentication before it will charge — a charging card, mobile app, or credit card payment Likely
  • The charging station is actively delaying charging, e.g. a scheduled-charging feature is enabled on the station Possible

Step-by-Step Diagnostic Procedure

  1. Check the station itself for instructions: a touchscreen terminal, LED status indicators, printed instructions, or a payment interface. Many public stations won't deliver power until you've authenticated with their card, app, or payment system.

  2. If you can't enable charging on that station, try different equipment or a different station. Per Tesla's official guidance: if the vehicle then charges, the issue was the equipment; if not, the issue may be with the vehicle.

  3. A Tesla Supercharger or Destination Charger (findable on the touchscreen map) is a good known-good test since no external activation step is involved.

  4. Per Tesla, this alert is usually specific to the external equipment and does not typically indicate a vehicle issue that service can resolve.

Frequently Asked Questions

What does CP_a066 mean on a Tesla?

Tesla's official meaning: charging can't begin because the station is telling the vehicle it isn't ready or charging isn't authorized — the control pilot signal says the car isn't allowed to start. Usually the station needs activation (card, app, payment) or has a scheduled-charging delay active.

How do I fix CP_a066?

Look at the charging station for its activation steps — terminal, status lights, printed instructions, or payment interface — and complete them. If that fails, try another station or a Tesla Supercharger. Per Tesla, this alert usually points to the equipment, not the car.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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