AutoCodes – Chevrolet – P0480 2018 Chevrolet Silverado

P0480 2018 Chevrolet Silverado Code - Cooling Fan Speed Output Circuit

Quick Answer

The engine cooling fan system is composed of 2 electric cooling fans, fan motors, and 2 control modules. Common causes include Faulty Cooling Fan Control Module, Cooling Fan Control Module harness is open or shorted, Cooling Fan Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0480 2018 Chevrolet Silverado indicates Cooling Fan Speed Output Circuit.
Common causes: Common causes include Faulty Cooling Fan Control Module, Cooling Fan Control Module harness is open or shorted, Cooling Fan Control Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 565

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 19, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0480 2018 Chevrolet Silverado Description

The engine cooling fan system is composed of 2 electric cooling fans, fan motors, and 2 control modules. The Engine Control Module (ECM) controls the fan speed by sending a Pulse Width Modulated (PWM) signal to the cooling fan control modules. The cooling fan control module varies the voltage drop across the cooling fan motors in relation to the pulse width modulated signal, which allows the cooling fans to operate at variable speeds.
The cooling fan speed is affected by many different conditions and the ECM will adjust the duty cycle from 0 - 100 percent based on cooling system requirements. The scan tool output control is only capable of operating the cooling fan increments, between 10 - 90 percent. 90 percent is considered high-speed fan. When multiple cooling fan speed requests are received, the ECM operates the fan at the highest speed requests.
The Diagnostic Trouble Code (DTC) will be set when the commanded state of the driver and the actual state of the control circuit do not match for greater than 5 s.

OBDII Code P0480 2018 Chevrolet Silverado - Cooling Fan Speed Output Circuit - AutoCodes.com — P0480 2018 Chevrolet Silverado Code - Cooling Fan Speed Output Circuit

What does this mean?

What are the Possible Causes of the DTC P0480 2018 Chevrolet Silverado?

Faulty Cooling Fan Control Module
Cooling Fan Control Module harness is open or shorted
Cooling Fan Control Module circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0480 2018 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0480 2018 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0480 2018 Chevrolet Silverado code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0480 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0480 in a 2018 Chevrolet Silverado?

The common symptoms of P0480 in a 2018 Chevrolet Silverado include the cooling fan running continuously or not running at all, overheating of the engine, and the Check Engine Light illuminating on the dashboard.

2. What does the OBDII code P0480 indicate in a 2018 Chevrolet Silverado?

OBDII code P0480 in a 2018 Chevrolet Silverado indicates a problem with the cooling fan speed output circuit. This means there is an issue with the electrical circuit responsible for controlling the cooling fan speed.

3. What are the possible causes of OBDII code P0480 in a 2018 Chevrolet Silverado?

Possible causes of P0480 in a 2018 Chevrolet Silverado include a faulty cooling fan motor, damaged wiring or connectors in the cooling fan circuit, a defective cooling fan relay, or a problem with the engine coolant temperature sensor.

4. How can I diagnose the OBDII code P0480 in my 2018 Chevrolet Silverado?

To diagnose P0480 in a 2018 Chevrolet Silverado, you can start by checking the cooling fan fuse, relay, and wiring for any visible damage. Using a multimeter, you can test the continuity of the circuit and check the cooling fan motor for proper operation.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P0480?

It is not recommended to continue driving your 2018 Chevrolet Silverado with OBDII code P0480, as it can lead to engine overheating and potential damage. It is best to address the issue promptly to prevent further problems.

6. How can I repair OBDII code P0480 in my 2018 Chevrolet Silverado?

To repair P0480 in a 2018 Chevrolet Silverado, you may need to replace the cooling fan motor, repair any damaged wiring or connectors, replace the cooling fan relay, or address any issues with the engine coolant temperature sensor.

7. Are there any DIY tips for fixing OBDII code P0480 in a 2018 Chevrolet Silverado?

While diagnosing and repairing P0480 may require some technical knowledge, you can start by checking the cooling fan fuse and relay for any visible damage. You can also inspect the wiring and connectors for any signs of wear or corrosion.

8. How much does it cost to fix OBDII code P0480 in a 2018 Chevrolet Silverado?

The cost of fixing P0480 in a 2018 Chevrolet Silverado can vary depending on the underlying cause of the issue. Replacing the cooling fan motor, relay, or sensor can range from $100 to $500, while labor costs can add to the total bill.

9. Will resetting the OBDII code P0480 in my 2018 Chevrolet Silverado make the issue go away?

Resetting the OBDII code P0480 in a 2018 Chevrolet Silverado may temporarily turn off the Check Engine Light, but it will not fix the underlying problem with the cooling fan speed output circuit. It is essential to diagnose and repair the issue to prevent further complications.

10. Can a mechanic help me fix OBDII code P0480 in my 2018 Chevrolet Silverado?

Yes, a qualified mechanic with experience in automotive diagnostics can help diagnose and repair OBDII code P0480 in your 2018 Chevrolet Silverado. They can use specialized tools and knowledge to pinpoint the exact cause of the issue and perform the necessary repairs.