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P0471 is a diagnostic trouble code (DTC) for "Exhaust Pressure Sensor Range/Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $69.99. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
The P0471 Trouble Code refers to the exhaust pressure sensor range/performance.
If the P0471 code appears, it means that the powertrain control module has detected that there is a voltage reading from the exhaust system back pressure sensor circuit that is out of the normal range. This is generally monitored in turbocharged vehicles, and those vehicles that have diesel engines.
A number of things could cause the P0417 code to appear, including the following:
If the code becomes stored, it could disable the exhaust back pressure regulator. In some vehicles, the driver might notice that there is diminished engine performance. The Check Engine Light will also light up, and you may find that other codes related to the exhaust system or the turbocharger could also be stored.
The mechanic will make use of a device called an OBD-II scanner. This device will connect to the onboard computer, which has stored data about the vehicle. The mechanic can learn about all of the different codes that have been stored, and this will give them a better idea of how to approach the vehicle’s repair. They will also want to reset the codes. They will test the vehicle to see if they come back or not. If they do, then the mechanic knows that there is an actual problem with the vehicle.
One of the common mistakes when technicians diagnose the P0471 code is believing that it is an exhaust gas recirculation code. It is important for the mechanic to diagnose the correct code and to follow through with the proper repairs. After they test and make repairs to different parts of the system, it is also a good idea for them to reset the codes and test the vehicle again.
When the P0471 code appears, you will probably still be able to drive your vehicle. However, this doesn’t mean you should ignore the problem. You may notice that the Check Engine Light comes on and that the vehicle doesn’t perform as well as it did before. You shouldn’t keep driving the vehicle in this condition, as it can eventually cause more problems. Instead, make sure that you take your vehicle to a mechanic for proper repair and diagnosis.
The following are some of the repairs that a mechanic can make to help fix the P0471 code.
If your vehicle has the P0471 code stored, you can probably still drive it. However, you don’t want to drive it for too long without getting it checked out. Even if you do not notice any issues with the performance now, it doesn’t mean there is no problem. It’s true that some of the older vehicles with a lot of miles on them might have false codes triggered sometimes, but you can’t rely on that being the case with your vehicle. You should take the time to get it checked out thoroughly by a mechanic who can diagnose it and make the proper repairs.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.