P0BB7

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 Voltage Sense Y Circuit Intermittent/Erratic

High severity

The BMS detects a circuit intermittent/erratic fault on voltage sense channel Y of the high-voltage battery. Cell-group voltage measurement is unreliable on this channel.

Common causes

Sense connector not seated
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $330-2750
Noisy ground reference
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $330-2750
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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 P0BB7 mean?

P0BB7 means "Hybrid/EV Battery Voltage Sense Y Circuit Intermittent/Erratic". It is a generic OBD-II code that points to a fault in the hybrid / ev powertrain.

What are the most common causes of P0BB7?

sense connector not seated; noisy ground reference; connector with intermittent contact under vibration — 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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