P0402moderate severityPowertrain

EGR Flow Excessive Detected

on 2002 Dodge Intrepid 2.7L V6 ยท FWD

What this code means

The EGR system is flowing too much exhaust gas.

Symptoms

  • Check Engine Light
  • Rough idle
  • Stalling
  • Surging
  • Poor acceleration

Common causes

  • EGR valve stuck open
  • Faulty EGR solenoid
  • Vacuum leak to EGR valve
  • Faulty DPFE sensor reading low

Diagnostic steps

  1. Check EGR valve for stuck-open condition
  2. Test EGR solenoid
  3. Check vacuum lines
  4. Test DPFE/position sensor

Repair notes

Replace EGR valve if stuck open. Repair vacuum lines.

Other Powertrain codes on this vehicle

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