P0482 code meaning
Fan 3 Control Circuit
Powertrain system Generic code P04xx codes Check engine light
What P0482 means
The engine module switches cooling fan stages through relays, pulling each relay coil to ground. P0482 concerns the control circuit of the third stage or relay: with the driver off the line should sit at battery voltage through the coil, and the internal pull-up level means an open circuit (Saab ME9: more than 1 s, 10–18 V, engine running). On the GM-based Saab 9-5 of 2011 it is relay 3 (medium stage) of a two-fan network, with shorts reported as P0695/P0696. GM tables list P0482 only in fault groups; Ford's OBD summaries do not contain it. One fan stage then fails.
P0482 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2 hours
- Clears after repairAfter a drive cycle
Symptoms of P0482
- Check engine light on
- One fan stage fails – temperature rises in traffic or when towing
- Air conditioning weaker at standstill
Common causes of P0482
- Most likelyFan relay 3 faulty (coil open) or not seated properly
- Most likelyControl wire open or high-resistance, corroded or backed-out pins
- PossibleRelay coil supply missing (fuse, supply wire)
- Less likelyDriver in the engine module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Cooling fan relay 3Fan relay wiringEngine control module
What each part of P0482 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 4 | Area: auxiliary emission controls (catalytic converter, EGR, EVAP). |
| 82 | The exact fault in that area. |
What to do next
- Note P0482 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 P0482
What does P0482 mean?
P0482 means "Fan 3 Control Circuit". The engine module switches cooling fan stages through relays, pulling each relay coil to ground. It is a generic code, so it means the same on every make.
Is it safe to drive with P0482?
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 P0482 fail an emissions test?
Yes, it can. P0482 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 P0482 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0482 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.