In February 2026, my 2008 Ford S-Max 2.0 TDCi had the engine management light on with DTCs including P003A (Turbocharger Boost Control Position Exceeded Learning Limit) and P02E2 (Intake Air Flow A Control Circuit Low).
The garage diagnosed the faults as definitely caused by a faulty turbo. I told them I could only afford the £1,500 repair if the turbo replacement would definitely fix the engine ma management light permanently, as I needed the car to pass the MOT and could not afford to buy a new car on top of £1,500. They assured me the turbo was the cause and that replacing it would turn the light off.
I asked if they could replace just the actuator instead, but they refused and insisted the whole turbo needed replacing. They fitted a Turbojetz turbo costing over £600, even though cheaper alternatives (such as Garrett) were available.
The turbo was replaced, but the engine management light returned immediately after the MOT. The garage has attempted to fix the issue five times since then, with no permanent resolution. The same or similar codes remain. The car now has no boost and is using significantly more diesel fuel.
The P02E2 code (intake air flow circuit) was present before the turbo replacement and has persisted afterwards.
I was not warned that the faults could be caused by wiring issues, a faulty boost control solenoid, actuator calibration, or other non-turbo causes. The light remains on. The turbo isn't working. They won't refund at all. It's been a massive inconvenience with multiple trips to different garages they have suggested and time consuming. It's now April and still ongoing! Having to write off the car and have lost £1,500 on top and not enough money to get a different car now.
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