P1403moderate severityPowertrain
EGR System Failure
on 2003 Dodge Ram Van 5.9L V8 · 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
- Command EGR valve open with scan tool and monitor engine response
- Inspect EGR valve for carbon buildup
- Check vacuum supply to EGR valve
- Test EGR solenoid operation
- Clean EGR passages and valve
Repair notes
Clean or replace the EGR valve and clean all EGR passages of carbon deposits.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1