Help error 0411

[BluesCruiser]

97 jetta , 2.0 , 4 speed std. , GL

error code 0411 2nd airflow

fix = 1st circuit failure or open fuse

where is this and what does it look like ?

fix 2 = bad air pump or clogged hose

again where is pump and witch hose

inspection due

I have replaced air filter, cleaned large hose to choke (oil in hose wiped clean) checked those small plastic hose that attach to air box , they seem ok and pass air through them ok...stumped help

[BluesCruiser]

all so does the brown plastic tube from the airbox go on top position or bottom on the air box the black one come from the motor.

does it make a difference..