DTC 71 - EGR System Malfunction

DTC 71 is set when EGR temperature is 158°F (70°C) or less for 50 seconds under the following conditions:

Engine coolant temperature at 176°F (80°C) or greater.
EGR operation possible. Except A/T in 3rd gear or M/T in 5th gear, cruising at 55-60 MPH on a flat road.

Check for open in EGR temperature sensor circuit, a shorted EGR VSV circuit, a plugged EGR passage or a faulty ECM.

Fig 1: DTC 71 - Schematic

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Fig 2: DTC 71 - Detection Driving Pattern

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Fig 3: DTC 71 - Diagnostic Flowchart (1 Of 2)

Fig 4: DTC 71 - Diagnostic Flowchart (2 Of 2)