P2E70
Hybrid/EV Battery Pack B Cell Thickness
The BMS detects abnormal cell thickness in HV battery pack B. Cell swelling indicates aging, thermal stress, or imminent failure.
The BMS detects abnormal cell thickness in HV battery pack B. Cell swelling indicates aging, thermal stress, or imminent failure.
Common causes
- high
Cells aged - swelling
One of the most commonly reported causes for this code — check this first.
Typical part cost: $880-8800
- medium
Thermal stress damaged cells
A plausible cause — test and verify before replacing parts.
Typical part cost: $880-8800
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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 P2E70 mean?
P2E70 means "Hybrid/EV Battery Pack B Cell Thickness". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2E70?
cells aged - swelling; thermal stress damaged cells; 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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