P2261: Turbocharger bypass valve mechanical malfunction
Drive carefully. Get it checked within a week or two.
Can I drive with P2261?
Yes, but drive carefully and get it checked soon. Turbo blow-off or diverter valve is sticking, causing turbo flutter noise and delayed boost.
What does P2261 mean?
P2261 stands for Turbocharger/Supercharger Bypass Valve - Mechanical.
Symptoms you may notice
- Severe loss of passing power and sluggish acceleration
- Whooshing or fluttering air sounds when accelerating or releasing gas
- Engine feels like a non-turbo motor without boost
How much does it cost to fix?
Repair costs for code P2261 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Torn rubber diaphragm in electronic diverter valve
- Carbonized or sticking bypass valve piston
- Vacuum supply hose disconnected or cracked
- Defective boost solenoid valve
What to do next
- Listen for a fluttering 'cho-cho-cho' noise when releasing the gas pedal.
- Inspect the diverter valve diaphragm on the turbo housing.
- Replace the diverter valve with an updated revision part.
Last updated: October 2026
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General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P2261 is very common on turbocharged engines (Ford EcoBoost, Hyundai/Kia, VW/Audi). The bypass valve vents pressurized air when you let off the throttle to protect the turbo compressor. A torn rubber diaphragm is the usual cause. The car is safe to drive normally.