P0253 is set when the FPRV control circuit is short to ground or open. The power stage monitors the control circuit shorted to ground when the power stage is operating.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
FPRV circuit monitoring | 1. FPRV control circuit short to ground or open 2. Faulty FPRV | |
Enable Conditions |
•
IG "ON"
•
Power stage is operating | ||
Threshold Value |
•
Short to ground or open in control circuit | ||
Diagnostic Time |
•
Open : 0.22 sec
•
Short to ground : 0.23 sec | ||
Fail Safe | Fuel Cut |
•
YES | |
EGR Off |
•
NO | ||
Fuel Limit |
•
NO | ||
Check Lamp |
•
YES | ||
