TESLA-PCS_A017 minor Tesla Power Conversion System (PCS)

Charging Stopped — Power Lost While Charging

The TESLA-PCS_A017 (Tesla Power Conversion System (PCS)) EV fault code means: Charging Stopped — Power Lost While Charging. 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, different outlet); electrician work billed by the job if building wiring is at fault.
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Common Symptoms

  • Alert on the touchscreen: "Charging stopped - Power lost while charging — Check power source and charging equipment"
  • A charging session ends before the target charge level is reached
  • Charging equipment may show no status lights
  • Driving is unaffected

Probable Causes (Ranked by Likelihood)

  • The charging equipment lost power from its source — e.g. a tripped breaker or dead wall outlet Likely
  • An issue with the charging equipment itself Possible

Step-by-Step Diagnostic Procedure

  1. Check for companion alerts first — per Tesla, this alert is often accompanied by others that identify the underlying issue.

  2. Check the Mobile Connector or Wall Connector status lights to confirm the device has power; the product manual's blink codes narrow down equipment faults. Third-party equipment may have its own display.

  3. If the equipment clearly has no power, check the circuit breaker for the outlet or Wall Connector.

  4. Isolate per Tesla's guidance: Mobile Connector → try a different outlet; Wall Connector → try different equipment on a separate outlet. If the original outlet or Wall Connector is at fault, have an electrician inspect the wiring.

  5. Per Tesla, this alert usually reflects the external equipment or power source, not a vehicle problem service can fix. A Supercharger is a good fallback.

Frequently Asked Questions

What does PCS_a017 mean on a Tesla?

Tesla's official meaning: power was lost during charging — either the charging equipment lost power from its source (like a wall outlet) or the equipment itself has an issue. It's usually the equipment or power source, not the vehicle.

How do I fix PCS_a017?

Check the charging equipment's status lights and the circuit breaker. Then isolate: try a different outlet (Mobile Connector) or different equipment (Wall Connector). If the original outlet or connector is the problem, have an electrician inspect the wiring.

Sources

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

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