P0404

DTC P0404 Exhaust Gas Recirculation (EGR) Open Position Performance

Circuit Description

The ECM controls the EGR valve opening based on the engine running condition and by controlling the EGR solenoid. The EGR valve position is detected by the position sensor and relayed to the ECM. If the ECM detects a variance between the actual EGR valve position and desired EGR valve position for a calibrated amount of time this DTC will set.

Condition for Running the DTC

^ DTCs P0112 P0113 P0116 P0117 P0118 P0405 P0406 P0652 P0653 P2227 P2228 and P2229 are not set.
^ The battery voltage is between 10 to 16 volts.
^ The ignition switch is ON.
^ The barometric pressure is more than 11 psi (75 kPa).
^ The intake air temperature is more than 19°F (-7°C).
^ The engine coolant temperature is between 149 to 198°F (65 to 92°C)
^ The EGR control is stable condition.

Condition for Setting the DTC

^ The ECM detects that the difference between the actual and the desired EGR valve position is more than 10% for longer than 8 seconds.

Action Taken When the DTC Sets

^ The ECM illuminates the MIL on the second consecutive driving cycle when the diagnostic runs and fails. Refer to DTC Type Definitions for Action Taken When the DTC Sets - Type B.
^ The ECM inhibits EGR control.
^ The ECM inhibits DPF regeneration control.

Condition for Clearing the DTC

^ Refer to DTC Type Definitions for Condition for Clearing the MIL/DTC - Type B.

Diagnostic Aids

^ If an intermittent condition is suspected refer to Intermittent Conditions in this section.
^ A sticking or intermittently sticking the EGR valve may set this DTC.

Circuit/System Testing DTC P0404