The ECM sets DTC P0234 when the actual throttle intake pressure is greater than the desired throttle intake pressure.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Rationality Check, Overboost | 1. Damaged turbocharger (TC) wastegate regulating valve solenoid 2. Damaged wastegate adjusting rod 3. Wastegate regulating solenoid valve stuck 4. Wastegate stuck closed 5. Wastegate control hose open or plugged 6. Incorrect wastegate adjustment |
Enable Conditions |
•
RPM is higher than 300rpm.
•
No DTC regarding Boost Pressure Sensor | |
Threshold Value |
•
Pressure - Desired Pressure > 200 hpa/0.2 bar/2.9 psi(desired Pressure:1500 hpa/1.5 bar/21.75 psi)~400 hpa/0.4 bar/5.8 psi(desired Pressure:2000 hpa/2 bar/29.00 psi) | |
Diagnostic Time |
•
2 sec | |
MIL ON Condition |
•
2 driving cycles |
