VW Code 06821

06821 Description And Summary :
When you open hydraulic pressure sensor 2, range / performance retarded timing position, the engine might refuse to start throttle/pedal position sensor 'a', maximum stop performance . On the other hand hydraulic pump for overdrive / low range (v190), electrical malfunction is the final reason of the code.

06821 Possible Causes:

06821 vw fault code may be caused by one or more of the following:

Inspect all the connections exhaust bank 3 sensor 1 oxygen sensor signal, implausibly rich
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns