Audi won't charge at home but charges elsewhere

Audi won't charge at home but charges elsewhere: how to find the cause

It's one of the more frustrating EV scenarios: the car is fine on public chargers, but at home it refuses to start, stops part-way through, or never reaches full. The good news is that the cause is almost always in one of three places, and a structured check sorts it in under an hour.

This applies to Audi BEVs (CCS Combo 2 inlet, AC up to 11 kW, Q4 35 capped at 7.2 kW) and PHEVs (Type 2, 3.6 to 7.4 kW single-phase).

The three places the fault usually lives

  1. The wallbox or its installation. Marginal earthing, an undersized supply, or a wallbox firmware bug that the public network doesn't share.
  2. The cable. A worn or under-specced Type 2 lead can pass a quick public session yet fail under the longer, hotter conditions of a full home charge.
  3. The car's own settings. Charging schedules, location-based current limits, or a saved "preferred location" that quietly caps or blocks sessions at your address.

A clean step-by-step

  1. Disable every charging timer and location-based limit in the car and the myAudi app. Test a direct, unscheduled charge.
  2. Check the wallbox status LEDs and app, if any. Many wallboxes log the reason they stopped a session.
  3. Look at earthing. Audi MEB-platform cars (Q4 e-tron especially) are sensitive to ground quality. A wallbox installed on a TT earth system, or with a marginal earth rod, can show "Error in the charging infrastructure" while the car works fine on public infrastructure with stronger earthing. This needs a qualified electrician.
  4. Swap the cable. If you're using a portable lead with the wallbox, try a different cable. A correctly specced Voldt Audi-compatible Type 2 charging cable rules the cable in or out as a suspect in a single test.
  5. Try a neighbour's wallbox if you can, or a public AC post near home. If the car charges fine there but not at yours, the issue is your installation, not the car.
  6. Check your consumer unit for a tripped RCD or breaker after a failed session. A wallbox that trips repeatedly under load points to an installation issue.

Bottom line

Clear the schedules, rule the cable in or out, and check the earth. Most "won't charge at home" cases are either an in-car setting or an installation issue, not the Audi itself.