P0490 is set when excessive current is detected in Electric EGR control valve circuit for more than 0.5 sec.. This code is due to short to battery in Electric EGR control valve control circuit or internal short in Electric EGR control valve component.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Signal monitoring |
•
Electric EGR control valve circuit
•
Electric EGR control valve component | ||
Enable Conditions |
•
Engine run | |||
Threshold Value |
•
Short to battery | |||
Diagnostic Time |
•
500 msec. | |||
Fail Safe | Fuel cut | NO | ||
EGR Off | Yes | |||
Fuel Limit | NO | |||
MIL | No | |||
