What does diagnostic code P0471 mean?
pressure sensor circuit
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.
Where does the exhaust pressure sensor go?
The exhaust pressure sensor is present in the exhaust manifold outlet of the exhaust system.
Can lack of back pressure damage an engine?
In addition to a lack of high speed power, poor fuel economy, and overheating, too much backpressure can also cause damage to the engine. A blocked exhaust can cause the engine to start and idle fine for a few minutes, but then die as backpressure builds up and chokes it out.
What causes OBD code p0471 Nissan?
Possible causes of OBD code P0471 Nissan – Exhaust Back Pressure Sensor The Error code is generally activated on detection of the following conditions: An EBP signal that is detected out of range (high or low) by the PCM will cause the engine to ignore the EBP signal and disable exhaust back pressure operation.
What does the p0471 code mean on a Ford F150?
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.
How do you fix the p0471 code on a Honda Accord?
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.
What does the code p0470 mean on a Chevy Silverado?
This code is strictly concerned about the incoming signal from the exhaust pressure sensor not matching intake manifold pressure or ambient air pressure at key on. This can be an electrical circuit fault or it can be mechanical. Code P0470 may also be present at the same time as the P0470.