Warning lights

EV charging system fault light

This warning means the vehicle has detected a problem communicating with or drawing power from the charger, rather than a battery problem itself.

Difficulty
Easy
Time
15–30 minutes to troubleshoot
DIY cost
$0
Pro cost
$150–$1000+ if the onboard charger needs repair

Symptoms

  • Charging fault icon or message when plugged in
  • Charging stops, doesn't start, or is much slower than expected
  • May happen with one specific charger/cable but not others

Likely causes

  • CommonFaulty or damaged charging cableCables can develop internal wear, especially with frequent use or outdoor storage.
  • CommonDirty or damaged charging port on the carDebris or bent pins can prevent a good connection.
  • CommonProblem with the charging station itselfPublic and home chargers can have their own faults unrelated to the car.
  • PossibleOnboard charger module faultThe car's internal hardware that manages AC charging can fail.
  • Less commonExtreme temperature limiting charge rateVery hot or cold weather can slow charging as a protective measure.

What to do

  1. Try a different charger or charging station if one is available, to isolate whether it's the car or the charger.
  2. Inspect the charging port on the car for debris, moisture, or bent pins.
  3. Check the charging cable for visible damage, especially near the connectors.
  4. Unplug and firmly reconnect the cable, making sure it clicks/locks in place.
  5. Restart the car (or the app, if using a smart charger) and try again.
  6. If it fails on multiple chargers and cables, have the car's charging system diagnosed by a dealer.
  7. Contact the charging network's support line if the fault seems to be with a public charging station.

When to call a pro

See an EV-certified dealer or specialist if the fault persists across multiple chargers and cables, which points to an onboard charging system issue.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.