P0243 Code: Turbocharger Wastegate Actuator A Circuit Malfunction
🟠 Moderate severity · drivable
Drivable, but boost control is off, which can hurt power — fix it soon.
What P0243 means
The computer detects an electrical fault in the wastegate actuator A circuit. The wastegate vents exhaust gas to control boost, and the actuator opens and closes it. If the circuit fails, the computer can't control boost pressure properly.
Symptoms
- Check engine light is on
- Loss of power
- Poor acceleration
- Possible overboost or underboost
Common causes
- most common: Faulty wastegate actuator or solenoid
- common: Damaged or shorted wiring to the actuator
- common: Corroded or loose connector
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the wastegate actuator or solenoid | Mechanic | $100–300 |
| Repair damaged wiring | Mechanic | $50–150 |
| Clean and re-seat the connector | Yes | $0–50 |
Frequently asked questions
Can I drive with a P0243 code?
Yes, but boost control is faulty, so power may be reduced. Fix it soon.
What is the most common cause of P0243?
A faulty wastegate actuator or solenoid, though wiring problems are also common.
How much does it cost to fix a P0243?
Usually $100–300 for a new actuator, or $50–150 for wiring repairs.
Related codes
P0244
P0244 Code: Turbocharger Wastegate Actuator A Range/Performance
P0245P0245 Code: Turbocharger Wastegate Actuator A Circuit Low
P0234P0234 Code: Turbocharger Overboost Condition
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.