OBD-II · Engine and powertrain (P)
P0243
Turbo wastegate solenoid A control circuit fault
What it means
The ECU detects an electrical fault in the wastegate solenoid control circuit. Vacuum leaks or a sticking actuator can cause underboost/overboost (P0299/P0234).
Likely causes, most likely first
| No. | Cause |
|---|---|
| 01 | open or shorted wastegate solenoid coil |
| 02 | open or shorted control wiring |
| 03 | corroded or loose connector |
| 04 | blown fuse or missing solenoid supply |
| 05 | ECU solenoid driver fault |