Code No. P0490:
EGR Control Solenoid Valve High
DIAGNOSIS CONTENT
Short circuit to battery
TROUBLE JUDGMENT
Check Condition
Judgment Criterion
- The power stage has an short circuit to the battery for the specified time.
DIAGNOSIS CONTENT
Excessive temperature of power stage
TROUBLE JUDGMENT
Check Condition
Judgment Criterion
- The power stage has excess temperature for the specified time.
FAIL SAFE FUNCTION
- EGR control is prohibited.
PROBABLE CAUSE
- Failed EGR control solenoid valve
- Failed electrical harness in EGR control solenoid valve circuit
- Failed engine-ECU
(Refer to Symptom Procedure - EGR Control Solenoid Valve System 
.)