Hello everyone,

 

you know someone, what is this sound ? 

Have you someone experience with this one ? 

 

I think that its a maybe wrong exhaust flap, because diagnostic found this fail:

 

21392 - Control Module for Exhaust Flap 
          P14AB 00 [109] - Mechanical Malfunction
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 147775 km
                    Date: 2020.11.07
                    Time: 10:49:14

                    Engine speed: 803.50 /min
                    Normed load value: 20.8 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 84 °C
                    Intake air temperature: 17 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 14.804 V
                    Unlearning counter according OBD: 40
                    Engine: operating status: IS
                    STATE_LS_SAE[1]: CL
                    T_AST_SAE: 623 s
                    MAP_MES_SAE: 32 kPa
                    Lambda probe voltage: bank 1: probe 1 (broadband probe): 1.987 V
                    FAC_TPS_1_SAE: 13.281250 %
                    FUP_H_SAE: 3850.0 kPa

To me it seems that it's the exhaust valve.

 

What isn't there can't be broken...
(don't pay attention, I'm referring to those who point out that it was better before when exhaust valves were still fitted)

UPDATE:

 

I disabled exhaust valve, but still listening this sound... Do yo have someone tips ? 

 

 

Sell it mate a 280 with a non working exhaust flap isn’t worth having .....

 

 

 

 

 

p.s this may or may not be useful advice depending on your point of view.....