What does diagnostic code P0471 mean?
exhaust system back 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.
How do I fix code P0471?
A good starting point for resolving a P0471 code is to disconnect the tube that connects the pressure sensor to the exhaust manifold. Inspect the tube for any blockages. You may need to blow through the tube to see if air can pass easily through.
Where is the exhaust pressure sensor located?
Usually, you’ll find the sensor bolted onto the side or bottom of the engine, or along the firewall in the back of the engine well.
How do you check exhaust pressure sensor?
Using a pressure gauge, measure the pressure of both hoses. For sufficient accuracy, use an exhaust back pressure gauge that measures 0-15 PSI. Check the signal voltage again. The voltage should read a number between the pressure values of the hoses.
What is an exhaust pressure sensor?
The Exhaust Gas Pressure Sensor is a Differential Sensor measuring the pressure difference between gas in the intake and the outtake of the Particulate Filter. This sensor is another element in the pollution regulation systems for Diesel engines imposed by European emissions regulation.
How do you know if your DPF is clogged?
What Are The Signs Of A Blocked DPF?
- You feel a loss of power in your engine (limp mode).
- The DPF light will appear on your dashboard.
- Passive and active regeneration keep failing.
- A pungent smell of diesel.
- Automatic Stop-Start System Not Working.
- Your car seems to be releasing an excessive amount of smoke.
What does the p0471 Ford exhaust pressure sensor do?
P0471 FORD Meaning The Exhaust Back Pressure (EBP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the Engine Control Module (ECM), produces a linear analog voltage signal that indicates pressure.
Why does my car have an error code p0471?
There are a number of things that could cause Error Code P0471, including the following: Faulty exhaust back pressure sensor Shorted or open exhaust back pressure sensor Poor electrical connection with exhaust back pressure sensor circuit Blocked or clogged tube that runs from pressure sensor to the exhaust manifold
What causes an OBD code of p0417 to appear?
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 causes of a Ford p0171 leak?
Ford P0171 Causes 1 Dirty or faulty mass air flow sensor 2 Vacuum leaks – PCV hose, vacuum hoses, intake manifold gasket. 3 Weak fuel pump 4 Clogged or dirty fuel injectors 5 Exhaust leak 6 Faulty oxygen sensor