Powertrain
generic / SAE
P0AD4
Hybrid/EV Battery Pack Air Flow System Insufficient Air Flow
The BMS detects that air flow through the HV battery pack is below the calibrated minimum. Cooling effectiveness reduced.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberA / D4
Possible causes
- Air filter clogged high
- Cooling fan underspeed medium
- Pack cell imbalance approaching service threshold low
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–500 €
- Estimated time: 0.5–3 h
- Component: hv battery pack air flow system
- Component: hv battery cooling fans
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012