Code result
P0AD4
Hybrid/EV Battery Pack Air Flow System Insufficient Air Flow
High severity
What it means
The BMS detects that air flow through the HV battery pack is below the calibrated minimum. Cooling effectiveness reduced.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Air filter clogged
highOne of the most commonly reported causes for this code — check this first.
Cooling fan underspeed
mediumA plausible cause — test and verify before replacing parts.
Pack cell imbalance approaching service threshold
lowLess common, but worth ruling out after the more likely causes.
Related help
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