What to do if your exhaust pressure sensor is not working?
To test if the fault is with the power supply circuit not being powered up, disconnect the harness that runs to the exhaust pressure sensor. To check if the tube connecting the exhaust manifold to the exhaust pressure sensor is blocked, try to run air through it; if the air does not go through easily, check for a blockage with a narrow wire.
What causes an exhaust back pressure sensor error code of p0472?
The P0472 error code can be caused by a fault with the exhaust back pressure sensor, the exhaust back pressure sensor harness or when there is an inadequate electrical connection in the exhaust back pressure sensor circuit.
What does key on mean on exhaust manifold pressure sensor?
In the context of “key on” values, this refers to the fact that the signal voltage from this sensor must match the signal voltages from the manifold pressure and intake air temperature sensors, even though there are no actual pressures to measure in the intake manifold or exhaust system beyond the current ambient atmospheric pressure.
Where is the exhaust back pressure sensor located?
Once you have completed all of these checks, you could try to install a new sensor. To find the exhaust back pressure sensor, look at the engine at the rear left, the sensor is next to the left exhaust gas recirculation positioner. After changing the sensor and before you drive your vehicle, ensure you clear the codes.
The P0472 error code can be caused by a fault with the exhaust back pressure sensor, the exhaust back pressure sensor harness or when there is an inadequate electrical connection in the exhaust back pressure sensor circuit.
To test if the fault is with the power supply circuit not being powered up, disconnect the harness that runs to the exhaust pressure sensor. To check if the tube connecting the exhaust manifold to the exhaust pressure sensor is blocked, try to run air through it; if the air does not go through easily, check for a blockage with a narrow wire.
Once you have completed all of these checks, you could try to install a new sensor. To find the exhaust back pressure sensor, look at the engine at the rear left, the sensor is next to the left exhaust gas recirculation positioner. After changing the sensor and before you drive your vehicle, ensure you clear the codes.
How to replace the DPF exhaust pressure sensor?
Pull down the DPF sensor to remove hoses and connector. Remove the clamps from the two hoses. Pay attention to the hoses. One is larger than the other. Remove hoses from the DPF sensor. Press both sides to unplug the electrical connector. Install hoses in the same position. Use new hose clamps. Connect the electrical connector.