P0EF1
Battery Charger Coupler Unlock Disabled
The battery charger coupler unlock is disabled - safety condition prevents unlocking. HV active or charging in progress.
The battery charger coupler unlock is disabled - safety condition prevents unlocking. HV active or charging in progress.
Common causes
- high
HV system still active
One of the most commonly reported causes for this code — check this first.
Typical part cost: $20-220
- medium
Charge session not terminated
A plausible cause — test and verify before replacing parts.
Typical part cost: $20-220
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P0EF1 mean?
P0EF1 means "Battery Charger Coupler Unlock Disabled". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.
What are the most common causes of P0EF1?
hv system still active; charge session not terminated — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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