Poor or faulty supply from the charge point, cable or domestic wiring (voltage drop, unstable supply or a faulty cable); Fault inside the onboard charger, such as a failing power stage or internal current sensor; Damaged, corroded or loose connections in the charge inlet, charger or high-voltage wiring; Coolant or thermal management problem causing the charger to limit its output; Low-voltage supply or earth problem, or a weak 12 V battery, affecting the charger control unit; Communication fault between the charger, battery management system and vehicle controller, or outdated software where the manufacturer has issued a fix.

P0D22

Battery Charger A Output Current Performance.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
D: AreaReserved
22: FaultThe specific fault in that area

What it means

P0D22 is the generic code for a performance fault on the output current of battery charger A, the onboard charger that feeds the high-voltage traction battery on a plug-in hybrid or electric vehicle. The control unit saw the measured charger output current differ from the current it requested or expected, or fall outside the allowed range, while charging. Exact monitoring conditions and thresholds vary by model and system design.

Symptoms

Charging fails, stops early or is much slower than normal
Charging warning light or a message on the dash
Charge port indicator showing a fault or not completing a charge
Reduced electric range because the battery is not fully charged
Hybrid or EV system warning light on, sometimes with other charger or battery codes

Possible causes

Poor or faulty supply from the charge point, cable or domestic wiring (voltage drop, unstable supply or a faulty cable)likely
Fault inside the onboard charger, such as a failing power stage or internal current sensorlikely
Damaged, corroded or loose connections in the charge inlet, charger or high-voltage wiringpossible
Coolant or thermal management problem causing the charger to limit its outputpossible
Low-voltage supply or earth problem, or a weak 12 V battery, affecting the charger control unitpossible
Communication fault between the charger, battery management system and vehicle controller, or outdated software where the manufacturer has issued a fixrare

How to diagnose

Read all stored codes and freeze frame data, noting charging state, current, temperature and supply conditions when the code set
Try a different charge point and charging cable to rule out the supply side, and check that the cable and plug are undamaged
Inspect the charge inlet for damage, moisture, debris, burnt or corroded pins, and check the visible low-voltage connectors at the charger
Check the 12 V battery condition and the charger's low-voltage supply and earth connections
Check the thermal management system, including coolant level and any cooling faults recorded for the charger or battery
Review live data for requested versus actual charger current and for related battery management codes, following the manufacturer's procedure
Only a suitably trained technician should test the high-voltage system, following the manufacturer's isolation and safety procedure, to check insulation and charger operation
Check for manufacturer software updates or service bulletins for the model before replacing the charger

How to fix

Repair or replace a faulty charging cable, or have the domestic or public supply corrected
Repair or replace damaged or corroded charge inlet pins, connectors and wiring
Replace the onboard charger if it is confirmed faulty, by a technician qualified in high-voltage work
Restore correct cooling system operation, including coolant level and any faulty pump or sensor
Replace a weak 12 V battery and repair low-voltage supply or earth faults
Apply a manufacturer software update if an outdated calibration is a known cause for the model

Can I keep driving?

Medium severity

The car can usually still be driven, although electric range or hybrid performance may be reduced because the battery is not charging properly. Get it checked soon, and stop driving if there are high-voltage warnings, burning smells or other symptoms.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.