P0D22 on Cadillac: How to Diagnose & Fix
Battery Charger Output Current Performance
1 Cadillac model · 1 documented issue · 1 critical
P0D22 on Cadillac by model: symptoms, diagnosis and fix
GM PIC6015A and PIC6076 cover ELR no-charge conditions and the Service High Voltage Charging System message. A cord, charging station, pilot-signal fault, cracked or water-affected receptacle, or an applicable HPCM2 calibration can produce the concern; the bulletins do not establish universal onboard-charger failure.
Common Symptoms
- Vehicle will not charge
- Service High Voltage Charging System message
How to Fix
Have a qualified technician record DTCs and freeze-frame data, rule out the cord and charging infrastructure, inspect the charge receptacle for cracks or water intrusion, and apply the current GM diagnostic or HPCM2 programming path when its criteria are met. Do not order charging hardware until the cause is confirmed.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (2)
P0D22 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0D22 mean on a Cadillac?
P0D22 stands for "Battery Charger Output Current Performance." A hybrid/EV code documented in GM service information (Chevrolet Volt and related plug-in models) and used on other plug-in platforms. The hybrid/EV powertrain control module monitors the on-board battery charger's high-voltage output and current and verifies they stay in range; the charger runs in constant-voltage mode at the start and end of a charge cycle and constant-current mode for most of it. P0D22 sets when the measured charge current does not match the commanded value. The practical symptom is a charge session that stops early, charges slowly, or refuses to start, usually with a charging-system message on the driver information center. The vehicle will normally still drive on whatever charge is in the pack, and on hybrids it falls back to engine operation. On Cadillac it is documented across 1 model: ELR.
What are the most common causes of P0D22?
The most common causes of P0D22 are: Failed on-board battery charger module (most common), Open or shorted battery charger wiring harness, Poor or corroded electrical connections in the battery charger circuit, Damaged or corroded charge port / charge cord connector pins, Software/calibration anomaly in the charger or hybrid powertrain control module — check for applicable manufacturer bulletins before replacing parts, Degraded or failing high-voltage battery pack. The specific cause varies by vehicle.
How much does it cost to fix P0D22 on a Cadillac?
Repair costs vary widely with the root cause and Cadillac model; each issue on this page carries its own estimate where one is published.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.