P1F11 on Chevrolet: How to Diagnose & Fix
Battery Charger System Performance
1 Chevrolet model · 1 documented issue · $10-$1,400 repair
P1F11 on Chevrolet by model: symptoms, diagnosis and fix
Second-generation Chevrolet Volts (2016-2019) have a widespread manufacturing defect that prevents the vehicle from recognizing that it is in Park, displaying a persistent "Shift to Park" error message. The vehicle cannot be powered off normally, draining the battery. The issue is caused by a faulty shift position sensor or worn shift mechanism contact. GM released Service Bulletin 19-NA-206 but offered limited repair coverage. DIY fix parts cost under $30 but dealer quotes range from $450-$1,400.
Common Symptoms
- "Shift to Park" message displayed when vehicle is in Park
- Vehicle will not power off or shut down normally
- Key fob unable to lock doors after exiting
- Battery drains if vehicle cannot shut down properly
- Intermittent issue that worsens over time
How to Fix
Check if GM Service Bulletin 19-NA-206 covers your vehicle under the Voltec Warranty. The actual fix involves replacing the shift lever contact assembly ($10-$30 in parts). Many owners successfully fix this themselves in 30-45 minutes. If the dealer refuses warranty coverage, reference the Voltec warranty terms and escalate to GM customer service.
Sources for this issue (1)
P1F11 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 P1F11 mean on a Chevrolet?
P1F11 stands for "Battery Charger System Performance." P1F11 is a manufacturer-specific code in the powertrain range whose provided name is Battery Charger System Performance, indicating the high-voltage battery charging system (on a hybrid, plug-in, or electric vehicle) is not performing within expected parameters. The control module monitors charging voltage, current, and related signals, and sets this code when the charger's actual output or behavior deviates from what it commands. Symptoms can include reduced charging, charging faults, or a warning to service the charging/electrical system. Because P1xxx codes are defined by the manufacturer, the exact meaning and components should be confirmed against the specific vehicle's service information. On Chevrolet it is documented across 1 model: Volt.
What are the most common causes of P1F11?
The most common causes of P1F11 are: Faulty onboard battery charger module, High-voltage battery or battery management module fault, Damaged charging system wiring or high-voltage connectors, Charge port or charging interface fault, Cooling problem causing charger to derate, Voltage/current sensor reading out of range, Software or control module calibration issue. The specific cause varies by vehicle.
How much does it cost to fix P1F11 on a Chevrolet?
Published repair estimates on Chevrolet range from $10 to $1,400 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P1F11 on a different make?
View P1F11 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.