P0299 – Turbo isn't making enough boost
Turbocharger/supercharger A underboost condition
Fuel and air · generic OBD-II code
You can drive it, but take it easy and get it looked at soon – waiting usually makes the repair bigger.
Check this first
Look for a popped-off charge pipe or a split intercooler hose – on turbo trucks that's the usual find.
Very common on the 3.5L EcoBoost. Check the simple pipes and clamps before anyone sells you a turbo.
What usually fixes it
In the order a good shop checks them. Typical total: $104–$2,975 at $130 an hour.
Charge pipe or clamp
A pipe blows off under boost and the engine goes flat.
Intercooler condensation or leak
Water collecting in the intercooler makes it stumble, often in damp weather.
Wastegate or turbo actuator
A sticking wastegate bleeds the boost away.
Turbocharger
Worn bearings or damaged vanes stop it building pressure.
What the vehicle can tell you itself
A stored code is a headline, not the story. The vehicle also holds the conditions when it happened, how close the part is to the limit it fails at, what the fuel trims are doing, and whether the fault is still happening right now. Drive DTC reads all of it with a USB adapter and a Windows PC – and it can't change a single setting on the vehicle.
See what your vehicle says about P0299
Codes in plain English, what usually causes them, what the repair costs, and whether it's safe to drive.