What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0A81battery pack cooling fan 1 control circuitP0A81BATTERY PACK COOLING FAN 1 CONTROL CIRCUITP0A81BATTERY PACK COOLING FAN 1 CONTROL CIRCUITManufacturer communications
4Original wording in English
VOLVO
Reported code forms P0A8187
This is a Technical Journal: DTC FIOC P0A8187 SET. This is a misdetection and a false positive (ghost code). The fan is actually working as intended
POLESTAR
Reported code forms P0A8187
This is a Technical Journal: DTC FIOC P0A8187 SET. This is a misdetection and a false positive (ghost code).
FORD
Reported code forms P0A81
Some 2005-2012 Escape Hybrid and 2006-2011 Mariner Hybrid vehicles may set DTCs P0A81 (battery pack cooling fan 1 control circuit) and/or P0A96 (battery pack cooling fan 2 control circuit) in the traction battery…
FORD, MERCURY
Reported code forms P0A81
FORD/MERCURY: SOME VEHICLES MAY SET DIAGNOSTIC TROUBLE CODES (DTCS) P0A81 (BATTERY PACK COOLING FAN 1 CONTROL CIRCUIT) AND/OR P0A96 (BATTERY PACK COOLING FAN 2 CONTROL CIRCUIT) IN THE TRACTION BATTERY CONTROL MODULE…
Check vehicle applicability
13A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | ESCAPE HYBRID | 2012 |
| Ford | ESCAPE HYBRID | 2011 |
| Ford | ESCAPE HYBRID | 2010 |
| Ford | ESCAPE HYBRID | 2009 |
| Ford | ESCAPE HYBRID | 2008 |
| Ford | ESCAPE HYBRID | 2007 |
| Ford | ESCAPE HYBRID | 2006 |
| Ford | ESCAPE HYBRID | 2005 |
| Mercury | MARINER HYBRID | 2008 |
| Mercury | MARINER HYBRID | 2007 |
| Mercury | MARINER HYBRID | 2006 |
| Polestar | POLESTAR 3 | 2025 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.