P042E

DTC P042E Exhaust Gas Recirculation (EGR) Closed 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 that the actual EGR valve position is higher than certain amount this DTC will set. (Closed Position Error Diagnosis)

If the ECM detects that the EGR learned minimum position is not within a predetermined range this DTC will also set. (Learned Position Error Diagnosis)

Condition for Running the DTC

^ DTCs P0112 P0113 P0116 P0117 P0118 P0403 P0404 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).

Condition for Setting the DTC

Closed Position Error Diagnosis:

^ The ECM detects that the actual EGR valve position is more than 5% for 3 seconds when the EGR control is commanded OFF

Learned Position Error Diagnosis:

^ The ECM detects that the EGR learned minimum position is not within a predetermined range.

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 MIL/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 P042E