TESLA-CP_A053 minor Tesla Charge Port (CP)

Unable to Charge — Charging Station Not Powered

The TESLA-CP_A053 (Tesla Charge Port (CP)) EV fault code means: Unable to Charge — Charging Station Not Powered. This is a minor severity code.

My Garage →
Keep driving?
Yes, but fix soon
DIY difficulty
easy
Estimated cost
$0 in the common case (breaker reset or a different station). Building-wiring fixes are electrician work billed by the job; if the vehicle also fails at known-good chargers, Tesla service diagnoses from there.
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Common Symptoms

  • Alert on the touchscreen: "Unable to charge - Charge station not powered — Check power source or try a different station"
  • A charge handle is detected but charging never starts
  • Usually appears with third-party or home charging equipment
  • Driving is unaffected

Probable Causes (Ranked by Likelihood)

  • The charging station is not powered (tripped breaker, dead outlet, station fault) — per Tesla, this alert is usually about the external equipment, not the vehicle Likely
  • The control pilot signal between the charging station and the vehicle is interrupted Possible

Step-by-Step Diagnostic Procedure

  1. Try different charging equipment or a different station. Per Tesla's official guidance: if the vehicle then charges, the issue was the equipment; if it still won't charge, the issue may be with the vehicle.

  2. With a Mobile Connector or Wall Connector, check the status lights on the front. No lights at all means no power — check the breaker, and have an electrician inspect the building wiring connection (all wires properly connected and torqued) if needed.

  3. For other third-party equipment, consult that product's manual to confirm the station is powered.

  4. A Tesla Supercharger or Destination Charger (findable on the touchscreen map) is a good known-good test: if the car charges there, your home or third-party equipment is the problem.

Frequently Asked Questions

What does CP_a053 mean on a Tesla?

Tesla's official meaning: charging can't begin because a charge handle is detected but the charging station isn't communicating with the vehicle — usually because the station has no power or the control pilot signal is interrupted. Tesla notes this alert usually points to the external equipment, not the vehicle.

How do I fix CP_a053?

Try a different charger or station first. If the car charges elsewhere, the original equipment or its power source is at fault — check its breaker and status lights, and have an electrician inspect the wiring if needed. If the car won't charge anywhere, including a Supercharger, then it's time for Tesla service.

Is CP_a053 a problem with my Tesla?

Usually not. Tesla's own alert text says this is typically specific to external charging equipment and power sources and does not usually indicate a vehicle issue that service can resolve.

Sources

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

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