NO SPEED ACCELERATION IN THE VEHICLE

I have a peugeot 407 1.6 hdi excuvite package vehicle. There is no sudden acceleration in my pain. I recently cleaned the egr air flow meter was cleaned so it did not happen. There is no sound from the turbo, there is no situation such as smoke from the exhaust. A friend of mine says that your air flow meter may be defective, but the error code does not appear when connected to the PC. I want to benefit from your experience. What could be the problem?

Have the turbo solenoid hoses checked, sir. or this part could be defective. the vehicle does not vacuum. Turbo pressure checked. There is a high probability of being a flow meter and sometimes it may not record a fault. The fault code was viewed with the original device.