P0E19

Q: 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.

Hybrid/EV Battery Pack Coolant Heater B Control Performance

High severity

The HV battery pack coolant heater B reports a control performance condition. Battery preheating may be impaired in cold weather.

Common causes

Heater element aged - low output
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $220-1650
Supply voltage low under load
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $220-1650
See all causes + fix costs
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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

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Frequently asked questions

What does P0E19 mean?

P0E19 means "Hybrid/EV Battery Pack Coolant Heater B Control Performance". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.

What are the most common causes of P0E19?

heater element aged - low output; supply voltage low under load; pack cell imbalance approaching service threshold — 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?

This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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