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1994-2007 DODGE RAM 2500
5.9L I6 Cummins Diesel•4WD•AUTOMATIC•diesel•turbo
22 active safety recalls on this vehicle — view recalls🏆Sponsored by Timmehster
Repairs485Labor512Torque3105Fluid10DTC1718Battery1Maintenance0Recalls22
P1403moderate severityPowertrain

EGR System Failure

on 1994-2007 Dodge Ram 2500 5.9L I6 Cummins Diesel · 4WD

What this code means

The PCM has detected a failure in the Exhaust Gas Recirculation system. The EGR valve is not operating as commanded, resulting in incorrect exhaust gas recirculation which affects emissions and can cause driveability issues.

Symptoms

  • Check Engine Light
  • Rough idle when EGR opens
  • Engine pinging or knocking at cruise
  • Failed emissions test
  • Poor fuel economy

Common causes

  • Stuck or clogged EGR valve
  • EGR passages blocked with carbon
  • Faulty EGR solenoid or transducer
  • Vacuum supply issue to EGR valve
  • Faulty EGR position sensor

Diagnostic steps

  1. Command EGR valve open with scan tool and monitor engine response
  2. Inspect EGR valve for carbon buildup
  3. Check vacuum supply to EGR valve
  4. Test EGR solenoid operation
  5. Clean EGR passages and valve

Repair notes

Clean or replace the EGR valve and clean all EGR passages of carbon deposits.

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