P0234 is set when real boost pressure is 200hpa higher than boost pressure target value lasting 15sec. at above 2000rpm and 15mg/st of fuel injection quantity with driving condition (Over mid-load). In this case, back pressure is increased by turbo charger in activities or clogging of exhaust line.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Signal monitoring | 1. Turbo charger. 2. Intake / exhaust line is choked. | ||
Enable Conditions |
•
Engine running | |||
Threshold Value |
•
real boost pressure is 200hpa higher than boost pressure target value lasting 15sec. at above 2000rpm and 25~45mg/st of fuel injection quantity with driving condition (Over mid-load). | |||
Diagnostic Time |
•
15 sec | |||
Fail Safe | Fuel cut | NO |
•
- | |
EGR Off | YES | |||
Fuel Limit | YES | |||
Check Lamp | ON | |||
