P0485 — Cooling Fan Circuit Over Current
Drive with caution — fix soon.
What P0485 means
This code means the engine computer sensed excessive electrical current in the cooling fan circuit, usually from a failing fan motor that's binding internally or a short in the wiring. Typical fixes include replacing the fan motor, repairing damaged wiring, or replacing a faulty relay. It's a common, repairable issue that's best handled before it causes repeated fuse failures or overheating.
Common symptoms
- Check engine light is on
- Cooling fan fuse blows repeatedly
- Engine overheating in slow traffic
- Cooling fan runs loud or struggles to spin
- Burning smell near the fan or wiring
Common causes
- Failing cooling fan motor drawing excess current
- Short circuit in the fan wiring
- Faulty or sticking fan relay
- Corroded or damaged connectors
- Worn fan bearings causing the motor to bind
Typical repair cost
$130 – $500
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0485 code?
Short trips are usually fine, but be cautious. Over-current often means the fan motor is dying, which can leave you without cooling and blow fuses. Watch your temperature gauge and avoid long stretches of slow traffic until it's fixed.
How much does it cost to fix a P0485 code?
Most repairs fall between $130 and $500. Replacing a fan motor is the most common fix and sits in the middle of that range, while wiring repairs or a relay can be cheaper. A proper diagnosis avoids guessing.
Is a P0485 code serious?
It's moderately serious. The risk is overheating if the fan quits and electrical issues from the excess current. The engine still runs, but you'll want this fixed soon to prevent bigger and pricier problems.
Why does my fan fuse keep blowing with a P0485 code?
An over-current fault usually means the fan motor is pulling too many amps, often because its bearings are worn or it's binding. That excess draw blows the fuse repeatedly, and replacing the fuse alone won't fix it until the motor or wiring is addressed.