Charging Equipment Reports Error — Charging Interrupted
The TESLA-CP_A139 (Tesla Charge Port (CP)) EV fault code means: Charging Equipment Reports Error — Charging Interrupted. This is a minor severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- easy
- Estimated cost
- $0 for the vehicle — the faulty external equipment is what needs attention (station operator for public units, the product's own support/warranty path for home units).
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Common Symptoms
- Alert on the touchscreen: "Charging equipment reports error — Check equipment for error code or message"
- A charging session stops; the station or connector shows its own error indication
- Driving is unaffected
Probable Causes (Ranked by Likelihood)
- The external charging equipment reported a fault that prevents the vehicle from charging (Tesla's official description) — the vehicle is relaying the equipment's error Likely
Frequently Asked Questions
What does CP_a139 mean on a Tesla?
Tesla's official meaning: charging was interrupted because the external charging equipment reported a fault that prevents the vehicle from charging. The vehicle is passing along the equipment's error — check the equipment itself for its error code or message.
How do I fix CP_a139?
Read the error off the charging equipment (status lights, display) and follow its manual's troubleshooting. Then try different equipment or another station; if the car charges elsewhere, the original equipment was the problem.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
Look at the charging equipment itself: status lights, displays, or error codes. The equipment's own manual documents its fault indications (Mobile/Wall Connector blink codes are in Tesla's product guides).
Try different charging 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.
Per Tesla, this alert is usually specific to the external equipment and doesn't typically indicate a vehicle issue service can resolve.
A Tesla Supercharger or Destination Charger is a good fallback and known-good test. Note: Tesla documents CP_a139, CP_a141, and CP_a146 with the same meaning and guidance.
Sources 4
This page is built from documented references. Verify against your own service info before repair work.
- Tesla Model 3 Owner's ManualTroubleshooting Alerts (official Tesla alert text for CP_a139; verified against the official Model 3 manual PDF, software 2026.20)
- Tesla Model Y Owner's ManualTroubleshooting Alerts (confirms CP_a139 is documented across models)
- Tesla firmware alert reference (core-hacked/tesla-alerts-dictionary): cp_a139community-maintained dictionary, not an official manufacturer document
- Tessie Tesla alert statisticsthird-party Tesla alert reference with owner-telemetry frequency — not an official Tesla document
Commonly Affected Vehicles
- Tesla Model 3
- Tesla Model Y
- Tesla Model S
- Tesla Model X
- Tesla Cybertruck
Related Codes
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