P0253 is set when "0"A in control circuit of P-PRV (integrated with high pressure pump) is detected for more than specified duration. This code is due to open or short to ground in P-PRV control circuit or P-PRV internal open.
Item | Detecting Condition | Possible Cause | |||
DTC Strategy |
•
Voltage monitoring | 1. P-PRV circuit problem 2. P-PRV | |||
Enable Conditions |
•
IG key ON | ||||
Case 1 | Threshold Value |
•
Short to ground in P-PRV control circuit. | |||
Diagnostic Time |
•
0.28 sec. | ||||
Case 2 | Threshold Value |
•
Open in P-PRV control circuit. | |||
Diagnostic Time |
•
0.22 sec. | ||||
Fail Safe | Fuel cut | NO |
•
- | ||
EGR Off | NO | ||||
Fuel Limit | YES | ||||
Check Lamp | ON | ||||
