P0480 code chevy silverado

It indicates that PCM has detected an incorrect amount of voltage high or low in the electric cooling fan control circuit. If you discover this code, then stop driving the vehicle till the code is rectified. While driving a vehicle an adequate amount of air goes through the radiator, p0480 code chevy silverado, which viably cools the engine but when we stop the vehicle or when it is in idle mode then no air is passing through the radiator and the engine begins to increase in temperature.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. There is a check engine light that came on. The code came back with the P

P0480 code chevy silverado

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. It had a cracked Y fitting in the junction of the water pump, coolant resevoir, and line going to firewall heater core maybe? I found 2 40 amp fuses for the fans that were friend, and I tested the relays by energizing the relay listening for a click and testing for no resistance. The two 4 prong were good, but on the 5 prong relay the 70a middle prong had resistance when the circuit was energized and clicked open. I replaced the blown fuses and fans turned on at about on the guage but each fan turned on at different times and after less than a minute running each fan blew each fuse. It smelled like burnt electrical and one fan seemed to be smoking from inside the fan itself. The wire harness and clip to the fan were not burnt at all or in bad condition. Each fan worked at some point. I'm wondering if the fan could be drawing too much current somehow because it is old and malfunctioning or if it could be the one 5 prong relay is bad? Can i rule out coolant temp sensor and pcm? Sort by Oldest first Oldest first Newest first Most reactions. Once realizing that they were blowing fuses, I took the fan assembly out and checked the connectors and wires going into the assembly.

It should work properly; replace it if you discover it faulty. Steps to diagnose this error code are as follows:. Reply to this topic

I have a Tahoe 5. Since then, the cooling fan will run after I turn the vehicle off. Also my temperature gauge is fine, no overheating. I did a code scan and P comes up. I replaced the relay for cooling fan 1 and no change.

The fault code P might be the culprit. This code indicates a problem with the fan control relay or its circuit. Symptoms can include an overheating engine or the cooling fan not working at all. The cause could be a faulty relay, a damaged wiring harness, or poor electrical connections. To fix the issue, visually inspect the wiring and connectors for any damage or corrosion.

P0480 code chevy silverado

Here is the definition of P for the Chevy Silverado, broken down by its two major parts:. Modern vehicles are equipped with electric cooling fans. They are activated by the PCM powertrain control module , whenever your Silverado reaches a certain temperature. One or both of them will also come on when the air conditioner is running. With P your Silverado should not drive any different. The fan will not affect the way that the engine runs unless you start to overheat. If you overheat, the engine may start knocking , misfiring, or smoking. It can also cause the air conditioner to stop functioning properly.

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Click and explore our shelves for all the options. Upload or insert images from URL. I stopped by the auto parts store and bought a relay and will put it in tonight. Please consider creating a new thread. So, make sure it should be perfect else can create problems. Each fan worked at some point. Jump the battery plus terminal in the first test with this switched terminal and place an additional jumper from the negative terminal on the relay to ground. Join the conversation You can post now and register later. I'm wondering if the fan could be drawing too much current somehow because it is old and malfunctioning or if it could be the one 5 prong relay is bad? Insert Quotes Quotes Post Reply.

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I accept. How To Correct P Cooling Fan Relay 1 Control Circuit If you detect error code P and the fans are not operating then the vehicle should not be driven as it may cause overheating which ultimately leads to engine damage or the engine to fail entirely. Please consider creating a new thread. Since then, the cooling fan will run after I turn the vehicle off. BTW, I'm planning on replacing the oil sensor at the same time. The code came back with the P Paste as plain text instead. All the required components to fix this code are just a click away on our website. Each fan worked at some point. Or, maybe there is a temporature sensor tripping it to come on. Week Month Year All Time. Parts Avatar Canada offers you a wide range of branded replacement parts on best prices ever.