What is EGR valve code?
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 does p0401 insufficient EGR flow mean?
P0401 Insufficient EGR Flow 1 Technical Description. What does that mean? 2 Symptoms. You may notice drivability problems such as pinging (a.k.a. 3 Causes 4 Possible Solutions. In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return.
What is the OBD code for insufficient EGR?
OBD II code P0401 Exhaust EGR Flow Insufficient The OBDII fault code P0401 means that the engine computer has detected that the Exhaust Gas Recirculation (EGR) system flow is insufficient. The EGR system redirects a small amount of exhaust gases back into the intake.
What is the EGR code on a Ford F150?
There are three main parts of the F150’s EGR system. They are the EGR Valve, Differential Pressure Sensor, and the Actuator Solenoid. P0401 is a general code, which means that regardless of the year (1996+ anyway) and the model, it’ll have the same meaning regardless of which manufacturer built the vehicle (Ford F150 or not).
What to do if your engine has insufficient EGR flow?
The EGR valve is not always the culprit. Use a vacuum pump and pull the EGR valve open while monitoring engine RPM’s & DPFE voltage. There should be a noticable difference in RPM’s with the EGR open Clean out the EGR valve and/or tubing to remove deposits
OBD II code P0401 Exhaust EGR Flow Insufficient The OBDII fault code P0401 means that the engine computer has detected that the Exhaust Gas Recirculation (EGR) system flow is insufficient. The EGR system redirects a small amount of exhaust gases back into the intake.
Which is the opposite of p0401 excessive EGR flow?
Excessive EGR flow. P0402 is the “Exhaust Gas Recirculation Flow Excessive Flow Detected” code, and it’s basically the opposite of a P0401 code.
What does early exhaust gas recirculation ( EGR ) system mean?
P0402 FORD Meaning Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control Μodule (ECΜ) Controlled Vacuum Switch Valve or EGR Solenoid and an EGR Vacuum Μodulator.
When did I replace the EGR valve on my F-150?
Have an F-150, 2002 year, 54k miles and just replaced the EGR valve. But still getting errrors for both: P0401 Insufficient EGR Flow P0402 EGR Flow Excessive at Idle What would fix both an insufficient and excessive flow?…