P0247Turbocharger/Supercharger Wastegate Actuator B
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The wastegate lets exhaust bypass the turbine to limit boost; actuator B is either a pulse-width-modulated solenoid on a pneumatic wastegate can or an electric actuator with a position sensor. B is the second turbo or actuator, so B codes only exist on engines with two. P0247 is the general circuit fault of actuator B, the counterpart of P0243. On GM's 3.0 litre twin-turbo V6 (LGW) it means an open circuit of more than 200 kΩ with the driver off, 10 of 20 samples, warning light in the first trip. Ford uses it on twin-turbo V6 engines with electric wastegates as the collective code for open and short circuits (0.4 s), together with P2ABE. Boost control on that side is switched off, costing power.
- What you may notice
- Check engine light on
- Clearly less power, boost only at base level
- Uneven boost between the turbos
- Reduced engine power message possible
- Likely causes
- LikelyConnector at wastegate valve or actuator B loose or corroded
- PossibleCoil or motor winding of actuator B open
- PossibleBroken control or supply wire
- RareDriver stage in the engine module faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €30 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.