P0D22

Code

Generic P — Powertrain

Battery Charger A Output Current Performance

Brand: Generic

Type: P — Powertrain

Views: UK: 16 EN: 25 RU: 19

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Page language: EN

Causes

Open or shorted wiring in charger output circuit
Failed or weak battery charger (internal electronics or power stage)
Blown fuse, tripped relay, or failed contactor in the charging path
High resistance connection at high-voltage connectors or terminals
Battery pack limiting charging due to pack voltage, temperature, state of charge, or internal fault
AC input supply problem (for plug-in vehicles) or inverter/rectifier issue feeding the charger

Symptoms

Charge session ends early or stops
Reduced-than-expected charge rate or long charge times
Charge indicator lamp illuminated or fault indicator on dash
Vehicle stores P0D22 and may limit driving range or enter reduced charging mode
Vehicle may not accept charge or Charging On/Off cycles occur repeatedly
Associated DTCs related to charger, high-voltage circuits, or battery pack may be present

What to check

Read freeze-frame and live data from charger and BMS; note pack voltage, pack temperature, commanded vs. measured charger current
Check for other related DTCs (charger, BMS, HV contactors, AC inlet)
Visually inspect AC/DC inlet, charger housing, high-voltage connectors, wiring harnesses and for signs of heat, corrosion, or damage
Verify fuses, relays and contactors in charging circuit for correct operation and signs of arcing or burning
Confirm vehicle software levels and any technical service bulletins for charging/charger issues
Observe safety: follow high-voltage procedures and isolate HV system before disconnecting connectors

Signal parameters

Commanded charger output current (A)
Measured charger output current (A) from current sensor
Battery/traction pack voltage (V) and state of charge (%)
Charger internal temperature (°C) and coolant temperature (if liquid cooled)
AC mains input voltage/frequency (for plug-in) or DC bus/inverter voltage (for onboard charger)
Contactor/relay status and HV interlock status (open/closed)

Diagnostic algorithm

Connect a dealer-level scan tool and record DTC P0D22 freeze frame and related codes; note conditions (SOC, pack temp, voltage, vehicle speed).
Attempt to reproduce fault while monitoring live data: observe commanded current vs. measured output current and any error responses from charger/BMS.
Inspect all charging-related connectors, wiring and terminals for corrosion, looseness, heat damage or burnt insulation; repair or replace as needed.
With HV system made safe by qualified personnel, measure continuity and resistance of output cable, contactors and fuses under de-energized conditions; compare to specifications.
If safe and allowed by procedures, measure output current during a controlled charge session using a clamp meter or manufacturer-prescribed method; confirm whether measured current tracks commanded current.
Check AC input (for plug-in) – verify inlet/receptacle, charge cable, and upstream supply; replace cable or inspect charging station if external supply problem suspected.
Check charger module internal diagnostics (many have service codes/logs). If charger reports internal faults (temperature, power stage failure, current sensor fault), consider replacing or repairing the charger module per manufacturer guidance.
Verify BMS behaviour: confirm the BMS is not commanding a reduced current due to high/low pack temperature, high SOC, cell imbalance, or internal battery fault. Address battery-related causes first if present.
Inspect and test HV contactors and pre-charge circuits for correct operation under load; replace any contactor showing high on-resistance or intermittent operation.
After repairs, clear DTCs, perform a full charge/discharge cycle if required, and re-test to verify the fault does not return. Document test results and any parts replaced.
If the fault persists after electrical checks, follow manufacturer procedures for module replacement or send charger module for bench evaluation.

Likely causes

High-voltage connector corrosion or loose terminal causing voltage drop under load
Failed charger power transistor/IGBT or internal current-sense element
Protective device (fuse/contactor) partially open or high resistance under load
Battery management system commanding reduced/zero current due to pack temperature or SOC limits
Damaged or chafed wiring causing intermittent high resistance or short to ground

Fault status

⚠️ Status

Battery Charger A output current performance out of expected range — measured output current does not match commanded/expected value. Charger or charging circuit may be limiting or failing.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.5-3.0 hours