The ECM sets DTC P0299 when the boost pressure is lower than the target value.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Rationality Check, Underboost | 1. Inspect Air cleaner 2. Intake side leakage 3. Intake side Blocked 4. Inspect waste gate valve and Recirculation valve (RCV) control hose blocked /leak /assemble improperly. 5. Faulty Boost Sensor |
Enable Conditions |
•
Engine RPM > 2000~2800rpm.
•
Atmosphere pressure > 700hpa(0.7 bar/10.15 psi)
•
Desired Boost pressure - Ambient Pressure > 500 hpa(0.5 bar/7.25 psi)(Altitude 2000m)/600 hpa(0.6 bar/8.7 psi)(Altitude 0m) for more than 3 sec | |
Threshold Value |
•
Pressure - Desired Pressure < -200 hpa(-0.2 bar/-2.9 psi) | |
Diagnostic Time |
•
3 sec | |
MIL ON Condition |
•
2 driving cycles |
