What it means
Battery charger A output current does not meet the expected performance criteria. Charging operation may be affected.
How it works
The battery charger controls the current it delivers during a charging session. The vehicle monitors charger A's output current against the level expected for the charging conditions and sets P0D22 when that current does not perform as expected; this indicates a performance mismatch, not by itself a confirmed short.
Common causes
Most likely first.
- Battery charger fault
- Charging circuit or connection fault
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
How to diagnose it
- Read freeze-frame data and charger live data to see when the output-current mismatch occurred and whether charging was starting, steady, or interrupted.
- Check the charge inlet, charger A connections, and accessible output wiring for looseness, corrosion, heat damage, or moisture that could limit current.
- Compare commanded and reported charger A output current during a supported charging test, following the vehicle manufacturer's procedure.
- Check related charging and battery codes, since a supply or battery condition can affect the current charger A is expected to deliver.
- If the connections and operating conditions are sound, test charger A and its output circuit against the manufacturer's specification.
Common fixes
- Clean and secure a loose or corroded charger A output connection.
- Repair damaged output wiring or connector terminals.
- Correct a related charging supply or battery fault affecting charger output.
- Replace battery charger A if testing confirms an internal performance fault.
Can I keep driving?
If charging is interrupted or slower than expected, do not rely on the vehicle having enough charge for a planned trip; use an available approved charging method and monitor the range. Stop charging if you notice unusual heat, smell, or visible damage.
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.