P0482
Fan 3 Control Circuit
Engine cooling
Generic OBD-II
High
What it means
P0482 means the ECM has detected a fault in the control circuit for cooling fan 3. Cooling fans pull air through the radiator (and condenser) at low speed and when idling, so a fan that won't run can let the engine overheat in traffic and weaken A/C performance. The cause is usually the fan motor, its wiring, or the fan control module.
High
Can I keep driving? Watch the temperature gauge — if a cooling fan isn't running the engine can overheat in slow traffic or idling. Avoid stop-and-go driving until it's fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Engine overheating, especially at idle or in slow traffic
- Weak or no A/C cooling
- Cooling fan not running when it should
Common causes
Most likely first
- Failed cooling fan 3 motorLikely
- Damaged wiring or connector in the fan control circuitCommon
- Faulty fan control module or relayCommon
- Blown fuse for the fan circuitLess often
- ECM/PCM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and confirm the code with a scan tool.
- Check the fan fuse and relay first, then command the fan on to see if it runs.
- Inspect the fan motor wiring and connector for damage or corrosion.
- Test the fan motor directly with power and ground; replace it if it won't spin.
- If the motor and wiring are good, suspect the fan control module. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P0482?+
Only with caution. If a cooling fan is dead the engine can overheat when you're idling or in traffic. Keep an eye on the temperature gauge and fix it promptly.
Can I just clear P0482?+
It returns until the fan circuit is repaired, and clearing it doesn't restore cooling. Address the root cause.
Related codes
Often seen with P0482
Read & clear P0482 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX