What it means
The battery charger input circuit reports a circuit low condition. AC mains/EVSE input may be impaired.
How it works
The onboard charger's input circuit monitors the AC supply arriving from the mains or EVSE. P0D82 sets when the measured input is below the expected range, which may result from a low supply, a short to ground, or a faulty connection.
Common causes
Most likely first.
- Charger input below expected range
- Input circuit short to ground
- Faulty wiring or connection
Symptoms
- Charging may be limited or may stop
How to diagnose it
- Check charging-session data or freeze-frame readings to establish whether the low input was detected at plug-in or while charging.
- Try a compatible, known-good EVSE and supply to determine whether the low reading follows a particular outlet or charging unit.
- Inspect accessible input connectors and wiring for damage, corrosion, loose terminals, or signs of overheating.
- Have a qualified technician measure the input circuit and check for a short to ground, comparing results with the manufacturer's specification.
- If the supply and wiring test correctly, diagnose the onboard charger's input circuitry for an internal fault.
Common fixes
- Fully seat the charging connectors.
- Repair damaged or loose input wiring or terminals.
- Correct a confirmed supply problem or use a compatible source with adequate input.
- Repair or replace the onboard charger if its input circuit is confirmed faulty.
Can I keep driving?
Charging may be reduced or stop, leaving the battery with less range than expected. Confirm charge status before driving and avoid relying on a session that has shown a low-input fault.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.