P2261 on Ford
Turbocharger/Supercharger Bypass Valve - Mechanical
P2261 on Ford vehicles indicates turbocharger/supercharger bypass valve - mechanical. Au7o has documented this code across 1 Ford model — most commonly on F-150. The PCM has detected that the turbo/supercharger bypass (recirculation/diverter) valve is not performing its mechanical function correctly. This valve vents or recirculates boost when the throttle closes to protect the forced-induction system. The code indicates a mechanical fault (stuck, leaking, or not moving) rather than an electrical circuit fault, so measured boost behavior does not match commanded operation. Typical repair costs on Ford range from $50 to $700, depending on the specific model and root cause.
Common Causes of P2261
- •Stuck, torn, or leaking bypass/diverter valve diaphragm
- •Vacuum/boost leak in the hose to the bypass valve
- •Faulty wastegate/bypass solenoid or actuator
- •Restricted air filter or intake affecting boost
- •Sensor/wiring fault feeding boost data to the PCM
P2261 on Ford by Model
Ford F-150(1 issue)
- EcoBoost Turbo Underboost (P0299) — Boost Leaks, Bypass Valve Diaphragm, and Warped Air Deflector2011-2025
P0299 sets when actual boost is about 4 psi or more below the commanded value for several seconds, dropping the truck into reduced-power limp mode (orange wrench light). On EcoBoost F-150s the most common causes are NOT the turbos themselves but cheaper upstream parts: a loose or popped cold-side intercooler boot/clamp, a torn orange rubber diaphragm inside the electronic turbocharger bypass (blow-off) valve, and cracked charge-pipe couplers. On 14th-gen (2021+) trucks a specific failure is the plastic upper radiator air deflector warping and blocking the passenger-side turbo intake snorkel, starving that turbo for air (updated part ML3Z-8310-D). Wastegate-actuator sticking can also contribute. Owners frequently — and wrongly — replace turbochargers when a smoke test would have found a hose or the bypass-valve diaphragm.
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View P2261 across all makes →Frequently Asked Questions
What does P2261 mean on Ford?▼
P2261 stands for "Turbocharger/Supercharger Bypass Valve - Mechanical." The PCM has detected that the turbo/supercharger bypass (recirculation/diverter) valve is not performing its mechanical function correctly. This valve vents or recirculates boost when the throttle closes to protect the forced-induction system. The code indicates a mechanical fault (stuck, leaking, or not moving) rather than an electrical circuit fault, so measured boost behavior does not match commanded operation. On Ford specifically, this code is documented across 1 model.
What causes P2261 on Ford vehicles?▼
Common causes on Ford: Stuck, torn, or leaking bypass/diverter valve diaphragm, Vacuum/boost leak in the hose to the bypass valve, Faulty wastegate/bypass solenoid or actuator, Restricted air filter or intake affecting boost, Sensor/wiring fault feeding boost data to the PCM. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2261 on a Ford?▼
Repair costs on Ford range from $50 to $700, depending on the specific model and root cause.
Which Ford models have P2261 documented?▼
Au7o has documented P2261 on 1 Ford model: F-150.