P0254 is set when excessive current in power circuit of 'Fuel metering unit' (integrated with high pressure pump) is detected for more than 0.22 sec.. This code is due to short to battery in power circuit or 'Fuel metering unit' internal short.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Voltage monitoring | 1. P-PRV circuit 2. P-PRV | ||
Enable Conditions |
•
IG key ON | |||
Threshold Value |
•
Short to battery in P-PRV circuit. | |||
Diagnostic Time |
•
0.22 sec. | |||
Fail Safe | Fuel cut | NO |
•
- | |
EGR Off | NO | |||
Fuel Limit | YES | |||
Check Lamp | ON | |||
