P0243 — Turbocharger Wastegate Solenoid Circuit
Seen on: Heavy Truck
Turbocharger Wastegate Solenoid Circuit. Common causes: Wastegate solenoid circuit fault.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Serious. Power derate likely — plan to stop soon.
Most likely causes
- Wastegate solenoid circuit fault
- Failed solenoid
- wiring damage
First moves (roadside)
- Check wastegate solenoid resistance (should be 15-25 ohm)
- test supply voltage
FAQ
Turbocharger Wastegate Solenoid Circuit. Common causes: Wastegate solenoid circuit fault.
Serious — Power derate likely — plan to stop soon.
The most common cause is: Wastegate solenoid circuit fault. Other possibilities include Failed solenoid; wiring damage.
Power derate likely — plan to stop soon. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.