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. No, that would be P0481. What causes the P0480 code? I checked my fuses but everything looks good. It's catastrophic to lose your only working fan. Report posts and comments that fall outside the guidelines. The ground path for the left cooling fan is through the cooling fan 2 relay and the right cooling fan.
If the vehicle overheats it can cause engine damage or the engine to fail entirely. The fans will stay on for approximately 3 minutes. Enter the 5 character trouble codes in the search box and submit the search. So some component in that circuit is causing the fan to not come on. How serious is the P0480 code? Misfires can be caused by ignition problems, fuel problems or compression problems. How does a mechanic diagnose the P0480 code? And driving around with a malfunctioning cooling system is really, really bad news.
What repairs can fix the P0480 code? At least open a window on your way to the shop. The error code that you have P0480 is Cooling Fan 1 Control Circuit Malfunction. Replacing the oxygen O2 sensors may sometimes fix the code, but in most cases the catalytic convert needs to be replaced to fix the problem. When your car's 'Volkswagen Passat P0480 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. Content Guidelines Please be polite.
So you should chech it on our car models. If you do not take the time to include this basic information your post may be removed until it is revised. The result is a series circuit with both fans running at low speed. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed.
Now don't ask yourself; What should you do with P0480 code? During high speed fan operation, both engine cooling fans have there own ground path. The system pulls a vacuum on the fuel system and holds it for a period of time. According to the interwebs it's cooling fan 1, which is the big fan in my assembly. We look forward to helping everyone with their car repairs and questions, but please take the time to read this sidebar. Does the scan tool indicate that this diagnostic has been run and passed? Jul 05, 2011 The fan may not be the problem. When you see P0480 engine fault code on your engine code reader this description will help you. Now Follow Step 14 - 12 Replace the relay.
There's a reason no one puts only one electric fan on a vehicle. 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. Now Follow Step 8 Now Follow Step 6 6 Examine the ignition feed circuit in the relay harness connector keeping the test light connected to ground. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. Most repairs have already been covered multiple times somewhere in great depth that will satisfy your needs. This energizes the cooling fan 2 relay coil, closes the relay contacts, and provides a ground path for the left cooling fan. If the P0421 code is combined with other codes, try fixing the other codes first.
P0480 can become serious if the vehicle is allowed to overheat. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time. This code is similar to P0481 and P0482 codes. Now Follow Step 9 Now Follow Step 10 8 Check the connections at the relay. The engine cooling system consists of 2 electrical cooling fans and 3 fan relays.
That's the carbon monoxide talking, friends. If the P0480 code is found and the fans are not operating then the vehicle should not be driven. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. The solution is here : Volkswagen Passat P0480 Possible Solution : The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. The underlying cause might be fouled spark plugs, bad plug wires, a weak ignition coil, dirty injectors, a shorted or open injector, low fuel pressure, a vacuum leak, a leaky head gasket, burned exhaust valve or a camshaft with a bad lobe. What the P0480 code means P0480 means that the cooling fan 1 control circuit has a malfunction. Tech notes As the code description implies the P0421 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly is not as efficient as the factory is expecting.