P0401 (Insufficient EGR Flow) most likely means one or more of the following has happened:.
The EGR passage is plugged restricting the flow of exhaust gases, EGR solenoid is faulty, Faulty EGR wiring/harness or the vacuum lines are damaged or disconnected from the solenoid or valve. Possible fault codes: P0400 (Exhaust Gas Recirculation Flow Malfunction) may mean that one or more of the following has happened:.Also if you come to Layton Remaps for an EGR removal there will be a nominal price for a remap. This means that you dont need to actually remove the EGR valve which would cost a lot of money. Deleting the EGR valve via a remap is basically coding the ECU to not open the EGR valve ever, meaning any issues caused by the EGR valve are ruled out because it will never be used. How Do I Solve The Issue?īy remapping and deleting your EGR valve you can make your cars engine run a lot better because when the EGR valve was in operation the ECU could prepare for the valve opening and alter the fuel and spark making a delay in detonation, but if the EGR valve is not in operation then the ECU will not alter the fuel and spark meaning there is no delay leading to a smoother running engine. Should you experience any of these symptoms, contact us we may have the permanent answer to these re-occurring issues. Some theories of failure range from, poor quality electronics used by some manufacturers to the extended service intervals now in place. If not dealt with, this can lead to turbo damage, a very expensive part when compared to the cost of an EGR replacement. The EGR is designed to open and close (normally electronically) at certain times through the rev range, but these valves get clogged up with carbon deposits, which can make them a fail, or even get stuck altogether either open or closed.Įvery engine is different but symptoms can vary from poor idling speed, knocking, loss of power, engine unresponsive, black smoke from the exhaust pipe, and the engine management light coming on. This process results in a more complete burn of fuel, which then decreases your cars noxious emissions by prohibiting the release via the exhaust of some harmful gasses. What Is An EGR (Engine Gas Recirculation)?ĮGR valves help all cars run more efficiently and completely burn fuel by recirculating a portion of your exhausts emissions and running these emissions through the combustion process again.
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