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EGR Removal
EGR Removal service by ECUFLASH
The purpose of the EGR
The EGR valve is designed to open and close (usually electronically) at certain times through the rev range. These valves can get clogged up with carbon deposits, which makes them fail to open or close, or worse, get stuck altogether.
The Problem
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.
Clean Egr valve
Blocked Egr valve
Symptoms of a clogged valve can vary from poor idling speed, knocking, loss of power, engine unresponsiveness to the engine management light coming on unexpectedly.
If the issue is not dealt with, it can lead to turbo damage, a very expensive part of a vehicle, especially when compared to the cost of an EGR replacement. Some failures are a result of poor-quality electronics used by some manufacturers to the extended service intervals now in place. Should you experience any of these symptoms, contact our experts at ECU-Flash. We may have the permanent answer to these recurring issues!
The Solution
EGR deleting is one of the most highly recommended solution.By deleting your EGR valve, you can make the engine of your vehicle 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. 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.
Deleting the EGR valve is coding the ECU to not open the EGR valve. Any issues caused by the EGR are ultimately ruled out because it will never be used. This means that you don’t need to remove the EGR, which would cost a lot of money. If you decide to use us for your EGR removal, there will be a nominal price for a remap.
Possible EGR fault codes:
-
P0400 (Exhaust Gas Recirculation Flow Malfunction) may mean that 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. - P0401 (Insufficient EGR Flow) most likely means one or more of the following has happened: The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced, there is a blockage in the EGR (tube) most likely carbon build up, The EGR valve is faulty or The EGR valve may not be opening due to a lack of vacuum.
- P0402 (Exhaust Gas Recirculation Flow (EGR) Excessive Detected) most likely means one or more of the following has happened:
- The DPF (differential pressure) sensor is faulty and needs to be replaced, there is a blockage in the EGR (most likely carbon build up), the EGR valve is faulty, The EGR valve may not be opening due to a lack of vacuum.
-
P0403 (Exhaust Gas Recirculation Circuit Malfunction) could be any of the following:
Bad EGR solenoid, Excessive resistance in control circuit (PCM controlled ground) due to an open, chafing or damage to the harness, Poor connection at the EGR solenoid harness (worn or loose pins), Water intrusion at the EGR solenoid harness, Blockage in EGR control solenoid holding solenoid open or closed causing excessive resistance, Loss of supply voltage to EGR solenoid, Bad PCM (Powertrain control module). -
P0404 (Exhaust Gas Recirculation Circuit Range/Performance) Usually this code points to either carbon build up or a bad EGR valve. However that doesn’t rule out the following:
Open or short in the 5 Volt reference circuit, Open or short in the ground circuit, Open or short in the PCM controlled voltage circuit, Bad PCM (less likely). -
P0405 (Exhaust Gas Recirculation Sensor A Circuit Low) Potential causes include:
Short to ground in EGR signal or Reference circuits, Short to voltage in EGR ground or signal circuits, Bad EGR valve, Bad PCM wiring issues due to chafing or loose terminals. -
P0406 (Exhaust Gas Recirculation Sensor A Circuit High) Potential causes include:
EGR sensor signal circuit shorted to B+ (battery voltage), EGR sensor signal circuit shorted to the 5 volt reference circuit to EGR, EGR sensor ground circuit open, EGR sensor signal circuit open, Bad EGR (internal failure on EGR sensor or solenoid), Debris caught in valve and holding it open or closed. - P0407 (Exhaust Gas Recirculation Sensor B Circuit Low) This code has basically the same causes as code P0405
- P0408 (Exhaust Gas Recirculation Sensor B Circuit High) This code has basically the same causes as code P0406
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P0409 (Exhaust Gas Recirculation Sensor “A” Circuit)Potential causes include:
Defective EGR sensor, Defect in the wiring harness to the sensor, EGR pintle stuck in the closed position and a build-up of carbon is preventing it from opening, Lack of vacuum to the EGR solenoid, Defective EGR solenoid, Defective EGR position sensor, Defective differential pressure feedback EGR sensor.
