Hi. Im facing a problem with my 2006 octavia tdi.  I put the ignition off and remove the key and the engine still runs and the heater light blinks and engine malfunction light has come on as well as when i press the accelerator pedal there is no acceleration. This has happened after I serviced my car from a local workshop and he has changed the fuel filter. Can anyone help me what went wrong. 

Thanks and Regards

@Chirag58 - That sounds like a problem with the fuel shutoff valve (aka the anti-diesel valve).