Can you drive with P0401 code?
Hi There, Code P0401 relates to the EGR valve flow. When this code is triggered, the computer has detected that the flow is insufficient. Driving the car until next week will not cause any harm, although the vehicle may not run well.
What does EGR error mean?
If the scan tool displays EGR Error at 99.2% and the EGR is commanded OFF, this indicates that the PCM is receiving information that the EGR valve position is greater than 0%. This may be due to an EGR valve that is stuck partially open or a malfunctioning EGR position sensor.
What does the p0401 Toyota engine code mean?
EGR flow malfunction could be caused by a clogged EGR valve or EGR tube. Before replacing any parts try cleaning the EGR valve, tube and passages. The cost to diagnose the P0401 TOYOTA code is 1.0 hour of labor.
What’s the EGR insufficient flow on a Toyota Prius?
Pete, The Hybrid Guy here, and I am pumped to tell you about how I solved the pesky P0401 EGR insufficient flow on my 2010 Toyota Prius. If you remember, this is the car that I was wondering if it was a mistake buying it. So far, it has been a great car, until this code, the P0401.
What causes an exhaust gas leak in a Toyota?
P0401 TOYOTA Possible Causes 1 EGR passage clogged 2 Faulty EGR Vacuum Modulator Valve 3 Faulty EGR Valve 4 Faulty EGR solenoid valve 5 EGR solenoid valve harness is open or shorted 6 EGR solenoid valve circuit poor electrical connection 7 Dead (Weak) battery 8 Faulty EGR temperature sensor and circuit 9 Exhaust gas leaks More
What does the exhaust gas recirculation do in a Prius?
The Exhaust Gas Recirculation is designed to help lower combustion temps inside the engine and ultimately help reduce tailpipe emissions. That is pretty basic. Know that it is there to help keep emissions down. Most systems have several components that make up the entire EGR assembly.
https://www.youtube.com/watch?v=tRuoTipYdkM