Does Prius have EGR?
Does Prius have EGR?
Most systems have several components that make up the entire EGR assembly. In our case, for Gen 3 Toyota Prius, we have an EGR cooler, an EGR valve, piping, gaskets, sensors, and even a neat stepper motor. All of these components must work together for the computer to keep that pesky check engine light off.
How does a Prius EGR valve work?
In essence, the EGR system opens a path between the exhaust manifold (which allows combustion gases to escape) and the intake manifold (which brings fresh air into the engine). The EGR valve therefore monitors and regulates the flow of exhaust gases into the engine.
What is EGR code?
What Does the P0401 Code Mean? Diagnostic trouble code (DTC) P0401 stands for “Exhaust Gas Recirculation (EGR) Flow Insufficient Detected.” This code means that the computer detects insufficient exhaust gas recirculation (EGR) flow in the system.
What is a EGR valve do?
Within modern internal combustion engines, Exhaust Gas Recirculation (EGR) is a method to control Nitrogen Oxides (NOx) emissions, produced as a by-product during the combustion process. The function of the EGR valve is to control the flow of exhaust gas being recirculated depending on the engine load.
What are the parts of an EGR system?
Most systems have several components that make up the entire EGR assembly. In our case, for Gen 3 Toyota Prius, we have an EGR cooler, an EGR valve, piping, gaskets, sensors, and even a neat stepper motor. All of these components must work together for the computer to keep that pesky check engine light off.
Does the Toyota extended warranty cover broken EGR valves?
With my 2010 Prius Toyota is refusing to cover all related repairs to the broken EGR valve under the extended warranty. They refuse to cover: Intake Manifold — EGR ports clogged need to be replaced to avoid misfires. The dealer is charging me $1700 out of pocket, and Toyota is paying for the EGR valve itself only.
What kind of problems does a 2012 Prius have?
2010-2012 Prius, 2012 Prius V, and Certain 2010 and 2012 Prius Plug-In vehicles. cold start due to a sticking Exhaust Gas Recirculation (EGR) Valve. If this occurs, the vehicle may illuminate the check engine light and set diagnostic trouble code (DTC) P0401.
What would cause the EGR valve to stop working?
The EGR valve quits working, that MAP (manifold absolute pressure) sensor malfunctions or the EGR system became clogged with carbon deposits. The carbon deposits are typically what causes an insufficient flow problem.
