P0480 OBD-II Trouble Code: Cooling Fan 1 Control Circuit Malfunction

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0480 code

P0480 is a diagnostic trouble code (DTC) for "Cooling Fan 1 Control Circuit Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE P0480 DIAGNOSTIC Get a fair and transparent estimate upfront

P0480 code definition

P0480 is a general OBD2 trouble code that refers to the a malfunction within the cooling fan control circuit. This code is similar to P0481 and P0482 codes.

What the P0480 code means

P0480 means that the cooling fan 1 control circuit has a malfunction. The vehicles ECU has tried to control the cooling fan 1 and it has failed to operate or a fault was detected. The ECU then triggers a Check Engine Light to illuminate on the dashboard.

What causes the P0480 code?

  • Faulty cooling fan 1
  • Poor electrical connection in the fan circuit
  • Failed fan control relay has failed
  • Failed coolant temperature sensor
  • Faulty AC pressure switch
  • VSS not operating properly

What are the symptoms of the P0480 code?

  • The most obvious symptom will be the Check Engine Light on the dashboard being illuminated.

  • The more serious side effect is that the vehicle's temperature may rise enough to overheat the vehicle if the fan is not operating.

How does a mechanic diagnose the P0480 code?

  • Uses a scan tool and checks for any codes stored in the ECU

  • Notes the freeze frame data that shows the coolant temp, RPM, vehicle speed, and etc. from when the code was set

  • Clears all of the codes

  • Takes the vehicle on a test drive and attempts to duplicate the conditions from the freeze frame data

  • Performs a visual inspection of the the fan system, checks carefully for fan operation and looks for damaged or worn wiring

  • Uses the scan tool to look at the datastream and confirms that the VSS sensor has proper readings, and that the coolant temperature sensor is reading accurately

  • Uses a relay tester to test the fan control relay or switches the relay with a good relay to test

  • Checks for proper operation of the AC pressure switch and that it is reading within specifications

Common mistakes when diagnosing the P0480 code

Mistakes are made when step by step diagnosis is not performed or steps are skipped entirely. There are many systems that may be responsible for the P0480 code and if they are overlooked the fan may be replaced when it was really the coolant temp sensor causing the fans not to operate.

How serious is the P0480 code?

P0480 can become serious if the vehicle is allowed to overheat. If the vehicle overheats it can cause engine damage or the engine to fail entirely.

If the P0480 code is found and the fans are not operating then the vehicle should not be driven.

What repairs can fix the P0480 code?

  • Replacing the VSS sensor
  • Replacing the engine coolant temp sensor
  • Repairing or replacing of the fan wiring harness
  • Replacing cooling fan 1
  • Repairing electrical connection issues
  • Replacing AC pressure switch
  • Replacing the fan control relay

Additional comments for consideration regarding the P0480 code

Access to the live data stream of the vehicle of the vehicle is needed to diagnose the P0480. This is accomplished with a professional level scan tool. This type of tools allows much greater access to information than the scan tools that simply read and clear codes.

Need help with a P0480 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

Check Engine Light
trouble codes
P0480

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0480 code.

SCHEDULE P0480 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


Related questions

P0480 trouble code
Hello. Typically this is not an issue with the relay. There have been some issues with the programming within the control computer that causes the fan to not work right which will cause this code. Being that the vehicle is...

More related articles

P2032 OBD-II Trouble Code: Exhaust Gas Temperature (EGT) Sensor Circuit Low Voltage Bank 1 Sensor 2
P2032 P2032 code definition Exhaust Gas Temperature (EGT) Sensor Circuit Low Voltage Bank 1 Sensor 2 What the P2032 code means This code indicates there is a problem with the catalytic converter or the system that monitors the efficiency of...
P2423 OBD-II Trouble Code: HC Adsorption Catalyst Efficiency Below Threshold Bank 1
P2423 P2423 Code Definition A P2423 code is a generic powertrain code related to emissions systems problems. In this case, the hydrocarbon adsorption and catalyst efficiency is below the allowed threshold in engine bank 1 (typically the number 1 cylinder)....
P0515 OBD-II Trouble Code: Battery Temperature Sensor Circuit
P0515 trouble code means there is an issue with the battery temperature sensor circuit often caused by battery corrosion or engine overheating.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com