The information contained on this site is presented for informational purposes only. If the code does not come back, then the technician will perform further testing to diagnose the issue. Often times the coolant power relay itself may be mounted on the radiator itself Replace any blown fuses or relays which may show signs of overheating burnt smell, melting. The list of automotive Makes at the right edge of the screen. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. If the problem persists, bring to reputable repair facility as you may have a problem worthy of a trained eye! Basically, the Error Code P0480 means the cooling fan 1 control circuit has experienced a problem, causing it to malfunction.
This code is similar to P0481 and P0482 codes. The cooling fan should be commanded on under certain conditions where the engine requires more cooling, and this is controlled via the. The solution is here : Chevrolet Trailblazer P0480 Possible Solution : The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. Hearing the click means the relay is activating. Common Symptoms Aside from the illumination of the Check Engine light, the only obvious symptom of this error code is the increase of engine temperature as soon as the vehicle idles or stops, this is because the fans are not running to cool off the engine.
We are not responsible for any actions you take on your vehicle. Definition As we drive our vehicles, a sufficient quantity of air passes through the radiator, which effectively cools the engine. Now don't ask yourself; What should you do with P0480 code? P0480 can become serious if the vehicle is allowed to overheat. When your car is idling at a stop sign for a while there is no cool air passing through the fins of your radiator this means the temperature within the cooling system will rise. Additional comments for consideration regarding the P0481 code When there is a trouble code present that can be set off by a sensor in the drivetrain, there are a number of possible causes. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
Then remove and check for corrosion. So you should chech it on our car models. However, also includes disassembly instructions for interior trim panels and exterior items like headlights and tail lights. How serious is the P0480 code? If the same code comes back, then both cooling fan 2 and the associated relay will be inspected for damage or a short in the wiring. The last thing you want is to replace are components that are working perfectly.
For the most part, the fuse box will be under hood somewhere or under dash refer to service manual for specific locations and specific procedures. Visually inspect terminals, wires and battery body for signs of damage or corrosion. This is where the purpose of the fans kicks in — to provide ample cooling for both the radiator and engine to keep them from overheating. However, if the P0480 returns with the relays in their swapped positions, check the wiring harness for an open condition. With engine running, you will want a voltage between 13. The cooling fan relay is about the size of a deck of cards only a little taller. The mechanical timing is also something that you should check, as we mentioned above.
Error Code P0480 refers to the basic circuit, and its related codes Error Code P0481 and Error Code P0482, relates to similar problem, but specific to different fan speed relays. Then they test the fan control relay using a relay tested, or switch the relay using a good relay to test. It can't hurt to try it and see what happens. They could be running on low speed and not pulling in enough air to cool. If your are for a different car, select that vehicle series before searching for the diagnostic codes because not all used by one manufacture are used by the other makes. If you've already made it to the store, you might as well just replace it. Fan 1 will not come on, but relay is closed so the circuit should be energized.
What are the symptoms of the P0481 code? While not car-threatening, it's good to take care of this right away to improve gas mileage. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver. Common mistakes when diagnosing the P0481 code Often when the P0481 code is observed, it is immediately assumed that either the cooling fan itself needs to be replaced or the is faulty. If there is no click coming from the relay, try replacing the relay with new one. If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. So you have to refer to the factory legends to learn the identification symbols and then refer back to circuit diagrams to find the splice and ground locations.
How does a mechanic diagnose the P0480 code? Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. If this does not take place, the will illuminate on the dashboard. All you need to do is take the old one off and screw on the new one. Enter the 5 character trouble codes in the search box and submit the search. Next, they clear the codes and then take the vehicle for a test drive to duplicate the conditions when the code was set. If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. Also, check the three fuses and the relay operation.
Generally speaking , there are 2 relays that control your cooling fans, the low speed relay and the high speed relay. Repair or replace the wiring as necessary. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Enter the 5 character trouble codes in the search box and submit the search. The problem usually occurs after driving in heavy snow conditions where snow and ice form at the bottom of the fan shroud and block the fan blade. Look up the other , please use the search box.