P0471 OBD-II Trouble Code: Exhaust Pressure Sensor Range/Performance

Our certified mechanics come to you · Get a fair and transparent estimate upfront


Cost of diagnosing the P0471 code

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 $154.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $50.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate* Credit towards follow-up repair Earliest Availability
Ford $154.99 $50.0
Toyota $154.99 $50.0
BMW $164.99 $50.0

*Estimates may vary by market

SCHEDULE P0471 DIAGNOSTIC Get a fair and transparent estimate upfront

P0471 code definition

The P0471 Trouble Code refers to the exhaust pressure sensor range/performance.

What the P0471 code means

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.

What causes the P0471 code?

A number of things could cause the P0417 code to appear, including the following:

  • Exhaust gas pressure sensor.
  • Something could be blocking the tube that runs from the exhaust manifold to the pressure sensor.
  • Issues with the exhaust gas recirculation system.
  • Potential issue with the powertrain control module, although this is quite rare.

What are the symptoms of the P0471 code?

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.

How does a mechanic diagnose the P0471 code?

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.

Common mistakes when diagnosing the P0471 code

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.

How serious is the P0471 code?

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.

What repairs can fix the P0471 code?

The following are some of the repairs that a mechanic can make to help fix the P0471 code.

  • Use an OBD-II scanner to diagnose the vehicle, and see if the codes return.
  • Check wiring and connectors to make sure nothing is shorted or corroded. They will make replacements and repairs if needed.
  • Check the exhaust pressure sensor.
  • Check the tubing that connects the exhaust pressure sensor to the exhaust manifold and make sure it is clear.

Additional comments for consideration regarding 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.

Need help with a P0471 code?

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.

Check Engine Light
trouble codes
P0471

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0471 code.

SCHEDULE P0471 DIAGNOSTIC
Get a $50 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(8600)

Rating Summary
8017
273
65
46
199
8017
273
65
46
199
 at YourMechanic

Brandon

9 years of experience
133 reviews
Brandon
9 years of experience
Ford Escort L4-2.0L - Check Engine Light is on - Nashville, Tennessee
Brandon showed up ahead of schedule, was very personable and diagnosed my problems. He also scheduled my next appointments which will be with him.
 at YourMechanic

William

23 years of experience
33 reviews
William
23 years of experience
Lexus IS250 V6-2.5L - Check Engine Light is on - Mableton, Georgia
Arrived early which was great. William was courteous, and attentive to the issue. Even though it took several attempts I'm so happy he was determined to fix it and he did!
 at YourMechanic

Dan

40 years of experience
1080 reviews
Dan
40 years of experience
Plymouth Grand Voyager - Check Engine Light is on - Lawrenceville, Georgia
Mr. Dan Barber was quite patient, courteous and quite knowledgeable. From my observation, Mr. Barber appears to be quite professional.
 at YourMechanic

Christopher

9 years of experience
120 reviews
Christopher
9 years of experience
Ford Fiesta L4-1.6L - Check Engine Light is on - Smyrna, Georgia
Chris communicated with us each step of the way up until his arrival. He listened well, was knowledgeable, and was prepared. He took the time to diagnose the problem, explained the what, why and how and provided a solution. I would definitely recommend him and will use him again.


More related articles

P2401 OBD-II Trouble Code: EVAP Leak Detection Pump Control Circuit Low
P2401 P2401 trouble code definition P2401 is a OBD2 generic trouble code indicating a fault within the EVAP leak detection circuit. This code may be seen with other EVAP system codes. What the P2401 code means The P2401 trouble code...
P2610 OBD-II Trouble Code: ECM/PCM Internal Engine Off Timer Performance
P2610 code definition ECM/PCM Internal Engine Off Timer Performance What the P2610 code means P2610 is an OBD-II generic code for the...
P3461 OBD-II Trouble Code: Cylinder 8 Exhaust Valve Control Circuit Malfunction
P3461 P3461 code definition P3461 is the generic OBD-II code for Cyl8 Exhaust Valve Ctrl Circ/Open. Cyl8 specifies that the issue is likely taking place in engine cylinder number 8. Other exhaust valve codes may accompany P3461. What the P3461...

Related questions

Check Engine light on; transmission leak
The coolant temperature sensor is likely what caused your Check Engine light. Sometimes aftermarket manufacturers produce parts of a lesser quality than the OEM. However, this does not mean that all aftermarket manufacturers produce faulty parts. It is harder to...
Car stutters and makes a clicking sound
Hi there. There could be several different possible causes for this to happen and truly needs the eyes and ears of a qualified technician to pinpoint. It could be as serious as an internal transmission failure to something as simple...
Rotten egg smell, all lights on dash board are on BUT the check engine light is off.
Simultaneous illumination of "all" warning lights on the dash while driving, when there is no underlying fault, indicates an electrical failure. That failure would have to be diagnosed in a warning light diagnostic (https://www.yourmechanic.com/services/warning-light-is-on-inspection). With regard to the check engine...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com