P0A98 code meaning
Hybrid/EV Battery Pack Cooling Fan 2 Stuck On
Powertrain system Generic code P0Axx codes Check engine light
What P0A98 means
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.
P0A98 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0A98
- Battery fan audible after the vehicle is switched off
- 12 V battery discharged after parking
- Hybrid or check engine warning
Common causes of P0A98
- PossibleWelded fan 2 relay
- PossibleFan 2 control wire shorted to supply
- PossibleFan 2 internal controller ignores off command
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hybrid battery cooling fan 2Wiring harnessBms
What each part of P0A98 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| A | Area: hybrid propulsion. |
| 98 | The exact fault in that area. |
What to do next
- Note P0A98 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0A98
What does P0A98 mean?
P0A98 means "Hybrid/EV Battery Pack Cooling Fan 2 Stuck On". P0A98 reports that battery cooling fan 2 keeps running after the controller has commanded it off; it mirrors P0A83 for fan 1. It is a generic code, so it means the same on every make.
Is it safe to drive with P0A98?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P0A98 fail an emissions test?
Yes, it can. P0A98 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0A98 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0A98 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.