Details On DTCs
P0234: 00 (PCM (H3T)) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
Twinscroll turbocharger overboost condition |
| Detection condition |
Determination conditions |
- As the result of comparing the actual air charging pressure with the limited pressure, the actual air charging pressure exceeds the limited air charging pressure.
|
| Preconditions |
- 2s have elapsed with all of the following conditions met during boost control feedback.
- Engine speed: 500 rpm or more
- The following DTCs are not detected:
- Boost pressure sensor: P0237: 00 and P0238: 00
- BARO sensor: P2228: 00 and P2229: 00
|
| Drive cycle |
|
| Self test type |
|
| Sensor used |
|
| Fail-safe |
- Limits intake air amount. (Only period of time when PCM determines that air is excessively boosted)
|
| Vehicle status when DTCs are output |
|
| Possible cause |
- Erratic signal to PCM
- MAP sensor signal malfunction
- Input signal part connector or terminals malfunction
- Input signal part related circuit malfunction
- Vacuum piping or positive pressure piping of wastegate valve actuator malfunction
- Air bypass valve malfunction
- Wastegate valve position sensor malfunction
- Wastegate valve actuator malfunction
- Twinscroll turbocharger malfunction
- PCM malfunction
|