P0A98Hybrid/EV Battery Pack Cooling Fan 2 Stuck On
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P0A98 reports that battery cooling fan 2 keeps running after the controller has commanded it off; it mirrors P0A83 for fan 1. No manufacturer documents this code publicly. CARB calls for fan outputs to be checked for correct response to commands. GM's published method for fan 1 (sense code P0BC8) flags a fan that still reports more than about 250 rpm after being off for over 20 s; the same logic applies to a second fan. Typical causes are a welded relay, a control wire shorted to supply or fan electronics that ignore the stop command. Cooling is not at risk, but the fan can drain the 12 V battery and is audible after shutdown. Fan 2 circuit codes are P0A96, P0A99 and P0A9A.
- What you may notice
- Battery fan audible after the vehicle is switched off
- 12 V battery discharged after parking
- Hybrid or check engine warning
- Likely causes
- PossibleWelded fan 2 relay
- PossibleFan 2 control wire shorted to supply
- PossibleFan 2 internal controller ignores off command
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.