P0480: How to Diagnose & Fix — Cooling Fan 1 Control Circuit
10 vehicles · 7 makes · $75-$1,800 repair
How to diagnose and fix P0480: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Audi A4 · 2009–2018
Various plastic coolant flanges and fittings can crack and leak, particularly on the side of the engine. These plastic components become brittle with age and heat exposure. Multiple leak points possible.
Common Symptoms
- Coolant leak on side of engine
- Low coolant warning
- Sweet coolant smell
- Overheating if severe
- Coolant puddle after parking
How to Fix
Replace failed coolant flange or fitting. Consider replacing nearby plastic fittings while in there as they likely have similar wear. Metal replacement flanges available from aftermarket.
Sources for this issue (2)
Chevrolet Camaro · 2016–2018
GM says water can migrate along the forward lamp wiring harness into the cooling fan connector on some 2016 Camaros, causing lost connection and terminal corrosion; the Check Engine light can come on, and if the loss of fan operation is not corrected the engine can overheat or be damaged. Owners of 2017-2018 V6 cars also report overheating at idle and a cooling fan that only runs after being tapped. GM Customer Satisfaction Program N152026170 covers 2016 Camaros with the 3.6L V6 (LGX) or 2.0L turbo (LTG); the 2017-2018 cases come from owners of 3.6L V6 cars.
Common Symptoms
- Engine overheats at idle
- Cooling fan does not run
- Cooling fan only runs after being tapped
- Check Engine light on
How to Fix
If the temperature gauge climbs at idle or the fan does not run when hot, have a technician check the cooling fan, its connector and wiring. For 2016 cars, GM's program N152026170 had dealers inspect the connector and ground terminals for water or corrosion, clean and seal them, or replace the wiring harness and/or cooling fan module if necessary; that program ended on June 30, 2018. The 2017-2018 cases come from owner reports, not a manufacturer finding.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (3)
Jeep Grand Wagoneer · 2022–2023
The electric cooling fan module on the Grand Wagoneer has been documented to fail, causing the dual electric radiator fans to run at reduced speed or stop entirely, resulting in engine coolant temperature spikes especially at low speeds and in traffic. The fan control module can develop internal MOSFET failures due to heat cycling, and Stellantis issued related service guidance through their dealer network. Owners report the temperature gauge rising into the red zone during stop-and-go driving and the A/C compressor cutting out as a secondary symptom.
Common Symptoms
- Engine temperature gauge rising above normal in traffic
- Cooling fans audibly not running or running slowly at idle
- A/C compressor cuts out unexpectedly in hot weather
- Overheating warning message on instrument cluster
- Check engine light with fan control related fault codes
How to Fix
Replace the integrated fan control module (FCM) mounted near the radiator assembly. Updated module part numbers have been released by Mopar to address thermal reliability. Inspect cooling fan wiring harness for chafing near the module connector, as wiring damage can mimic module failure. Coolant system inspection and flush recommended simultaneously.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Mopar 68275634AD standard-duty radiator fan assemblyOEMMopar 68275634AD
Fan/module replacement after command and circuit tests confirm failure on the standard-duty 6.4L branch Fitment/availability: 2022-2023 Grand Wagoneer 6.4L without heavy-duty cooling. Confirm VIN/cooling sales code; not for heavy-duty co…
- Genuine Mopar 68268606AE heavy-duty radiator fan assemblyOEMMopar 68268606AE
Fan/module replacement after command and circuit tests confirm failure on the heavy-duty 6.4L branch Fitment/availability: 2022-2023 Grand Wagoneer 6.4L with heavy-duty cooling. Confirm VIN/cooling sales code; not for standard-duty cooli…
- Genuine Mopar 68468156AC 3.0L radiator fan assemblyOEMMopar 68468156AC
Fan/module replacement after command and circuit tests confirm failure on the 3.0L Hurricane branch Fitment/availability: 2022-2025 Grand Wagoneer 3.0L catalog branch. Confirm VIN/current supersession; not for either 6.4L cooling configu…
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Infiniti M56 · 2011–2013
Jeep Wrangler · 2012–2018
Find P0480 by make
Browse every documented model and issue for your make.
P0480 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0480 mean?
P0480 stands for "Cooling Fan 1 Control Circuit." P0480 indicates a fault in the engine control module's circuit that operates cooling fan 1 (or the fan relay it drives). The computer detected an open, short, or out-of-range condition in the fan control output. Because the cooling fan helps prevent the engine from overheating — especially at idle, low speeds, or with the A/C on — a fan that won't run can lead to high coolant temperatures. It is worth addressing fairly promptly to avoid overheating, particularly in hot weather or stop-and-go traffic.
What are the most common causes of P0480?
The most common causes of P0480 are: Faulty cooling fan relay, Failed cooling fan motor, Wiring damage, shorts, or corroded connectors in the fan circuit, Blown fuse or fusible link for the fan, Poor ground for the fan motor or relay, Faulty fan control module (where used), PCM driver circuit fault (less common). The specific cause varies by vehicle.
How much does it cost to fix P0480?
Repair costs for P0480 range from $75 to $1,800, depending on the vehicle and root cause.
Which vehicles are affected by P0480?
Au7o has documented P0480 across 10 vehicle models from 7 manufacturers: Audi, Chevrolet, GMC, Infiniti, Jeep, Mitsubishi, RAM.
Join 700+ subscribers following Au7o for vehicle insights and updates.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.