P25B3 code meaning
Turbocharger/Supercharger Wastegate A Stuck Open
Powertrain system Generic code P25xx codes Check engine light
What P25B3 means
P25B3 says the wastegate of turbocharger A stays further open than the module commands, so exhaust bypasses the turbine and boost falls short. On Ford EcoBoost engines with an electric wastegate actuator and position sensor, the PCM compares commanded and measured position; a gap above 20 mm held for 2.5 s sets the code, provided no circuit fault (P0243, P2ABD) is present. The 2024 summary reports it as P0243 with failure type 72. Ford bulletins SSM 49427 and 50171 cover 2.0/2.3 L EcoBoost models from 2019 (Edge, Escape, Ranger, Explorer, Bronco Sport and others) with a missing e-clip, a dead actuator or a damaged actuator rod; a service kit replaces actuator, rod and clips without a new turbocharger. Toyota lists P25B3-72 on the 2022 Tundra V35A and released new ECM software for it on the 2023 GR Corolla. Expect lack of power.
P25B3 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1.5 to 8 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P25B3
- Clearly reduced power and slow boost build-up
- Check engine lamp on, often with an underboost code
- Wrench or reduced power warning on some models
Common causes of P25B3
- Most likelyMissing retaining clip disconnecting actuator rod from the wastegate lever
- PossibleElectric wastegate actuator failed or rod bent
- PossibleWastegate flap or bushing seized in the open position by heat or carbon
- Less likelyDiagnostic calibration needing an update (Toyota GR Corolla)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Wastegate aTurbocharger a
What each part of P25B3 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| B3 | The exact fault in that area. |
What to do next
- Note P25B3 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P25B3
What does P25B3 mean?
P25B3 means "Turbocharger/Supercharger Wastegate A Stuck Open". P25B3 says the wastegate of turbocharger A stays further open than the module commands, so exhaust bypasses the turbine and boost falls short. It is a generic code, so it means the same on every make.
Is it safe to drive with P25B3?
Drive gently and only to a workshop. With P25B3 the car can go into limp mode (reduced power) to protect itself.
Will P25B3 fail an emissions test?
Yes, it can. P25B3 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P25B3 to fix?
Difficulty: hard. A typical repair takes 1.5 to 8 hours of work. This is a job for a workshop.
Will P25B3 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.