P2D4E
Hybrid/EV Battery Pack J Over Temperature
The BMS detects that battery pack subsection J is operating above the safe temperature threshold. Cell-level cooling or pack thermal management is compromised on this section.
The BMS detects that battery pack subsection J is operating above the safe temperature threshold. Cell-level cooling or pack thermal management is compromised on this section.
Common causes
- high
Coolant flow to this section reduced
One of the most commonly reported causes for this code — check this first.
Typical part cost: $550-5500
- medium
Cell imbalance causes local heating
A plausible cause — test and verify before replacing parts.
Typical part cost: $550-5500
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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 P2D4E mean?
P2D4E means "Hybrid/EV Battery Pack J Over Temperature". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2D4E?
coolant flow to this section reduced; cell imbalance causes local heating; ground point with elevated resistance — 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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