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P0407

Posted: Thu May 27, 2021 4:37 pm
by patters1978
Hi

Stupidly I put my last thread in the B6 forums :shock:

Passat 1.6 TDI bluemotion

Anyway broke down at a garage with the "Depress Clutch" with no start.. after a few attempts to start not start and flashing glow plug light.
Garage have been useless they have said i need to replace a glow plug but upon scanning my car with a cheap sweetwize argos scanner i have found the fault code P0407.

Now with the key in ignition (not starting) i get no codes at all but once the engine is started and rescanned i get the error code.
The car is very lumpy at idle
Sometimes the Start/Stop system shows an error
And i have a ! next to a cruise control symbol where the mileage normally is on start up
Also when the car stops i get a noise coming from the throttle body as shown in video, i have taken the throttle body apart and nothing seems wrong with it at all i have removed the motor within it and tested with a battery spins freely

https://youtu.be/zfPYOzmkbjM

Also when i try clear p0407 fault with the engine running it sounds a tho the car is gonna stall
Any help