P0480 RAM Code - Cooling Fan 1 Control Circuit
Quick Answer
The electric cooling fan is controlled by the Engine Control Module (ECM) through the cooling fan relay based on inputs from the following components: - The engine coolant temperature (ECT) sensor - The intake air temperature (IAT) sensor - The A/C selector switch - The A/C refrigerant pressure sensor - The vehicle speed sensor (VSS) The ECM controls the cooling fan by grounding the cooling fan control circuit which turns ON the cooling fan relay. Common causes include Faulty fan control relay, Fan control relay harness is open or shorted, Fan control relay 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 RAM indicates Cooling Fan 1 Control Circuit.
- Common causes
- Common causes include Faulty fan control relay, Fan control relay harness is open or shorted, Fan control relay 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.
Code P0480 RAM Description
- The engine coolant temperature (ECT) sensor
- The intake air temperature (IAT) sensor
- The A/C selector switch
- The A/C refrigerant pressure sensor
- The vehicle speed sensor (VSS)
The ECM controls the cooling fan by grounding the cooling fan control circuit which turns ON the cooling fan relay. The cooling fan relay will be commanded ON when the following conditions are met:
- The engine coolant temperature reaches 106°C (223°F) or more.
- The A/C clutch requested.
- The vehicle speed is less than 38 MPH.
The cooling fan relay will be commanded ON regardless of vehicle speed when the following conditions are met:
- The engine coolant temperature is 151°C (304°F) or more.
- The A/C refrigerant pressure is high.
The cooling fan may be commanded ON when the engine is not running under a fan run-on conditions described in the electric cooling fan general description portion of the service manual.
What are the Possible Causes of the DTC P0480 RAM?
- Faulty fan control relay
- Fan control relay harness is open or shorted
- Fan control relay circuit poor electrical connection
- Faulty cooling fan 1
- Fan cooling fan harness is open or shorted
- Fan cooling fan circuit poor electrical connection
How to Fix the DTC P0480 RAM?
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 RAM 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 RAM code?
Need more information on how to fix the P0480 RAM code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0480 RAM code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0480 RAM Code
1. What are the common symptoms of OBDII code P0480 Cooling Fan 1 Control Circuit?
- The common symptoms include overheating of the engine, the cooling fan not running when the engine is hot, and the Check Engine Light being illuminated.
2. What can cause the OBDII code P0480 Cooling Fan 1 Control Circuit to trigger?
- The code can be triggered by a faulty cooling fan, a malfunctioning cooling fan relay, a blown fuse, or wiring issues in the cooling fan circuit.
3. How can I diagnose the cause of OBDII code P0480 Cooling Fan 1 Control Circuit?
- You can start by checking the cooling fan fuse, relay, and wiring connections. Then, test the cooling fan motor to see if it is functioning properly. A scan tool can also help monitor the cooling fan operation.
4. Can I still drive my vehicle with OBDII code P0480 Cooling Fan 1 Control Circuit?
- It is not recommended to drive the vehicle with this code as it can lead to engine overheating, which may cause serious damage. It is best to address the issue promptly.
5. What are the repair options for OBDII code P0480 Cooling Fan 1 Control Circuit?
- Repair options include replacing the cooling fan motor, replacing the cooling fan relay, checking and repairing any damaged wiring, and ensuring the cooling fan fuse is intact.
6. How much does it typically cost to repair OBDII code P0480 Cooling Fan 1 Control Circuit?
- The cost of repair can vary depending on the underlying issue. Replacing a cooling fan motor can cost between $200 to $400, while replacing a relay or repairing wiring may cost less.
7. Can a DIY enthusiast fix OBDII code P0480 Cooling Fan 1 Control Circuit?
- Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code. However, it is recommended to seek professional help for accurate diagnosis and repair.
8. Are there any preventive measures to avoid OBDII code P0480 Cooling Fan 1 Control Circuit?
- Regular maintenance, such as checking the cooling system components during routine inspections, can help prevent issues that may trigger this code. Keeping an eye on the temperature gauge can also help detect problems early.
9. What are the risks of ignoring OBDII code P0480 Cooling Fan 1 Control Circuit?
- Ignoring this code can lead to engine overheating, which can cause severe engine damage and potentially leave you stranded on the road. It is important to address cooling system issues promptly.
10. Is it necessary to clear the OBDII code P0480 Cooling Fan 1 Control Circuit after repairs?
- Yes, it is important to clear the code after repairs have been made to reset the Check Engine Light and ensure the issue has been resolved. This can be done with an OBDII scanner or by disconnecting the battery for a short period.
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