P0490moderate severityPowertrain
EGR Control Circuit High
on 2014 Ram 2500 6.7L I6 Cummins Diesel · 4WD
What this code means
The PCM has detected a high voltage condition in the EGR control circuit. This may indicate an open circuit or wiring fault affecting EGR operation.
Symptoms
- Check engine light on
- Rough idle
- Increased emissions
Common causes
- Open circuit in wiring
- Faulty EGR valve
- Corroded connector
- Faulty PCM
Diagnostic steps
- Scan for stored codes
- Check EGR control circuit voltage
- Inspect wiring for opens
- Test EGR valve operation
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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
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1