Hey Scotty,

  I have a 2006 Mazda 6 4cyl, sedan (normally aspirated) with 114,000 miles. I have replaced the O2 sensor but still get the following codes.  Any ideas?

P0137  O2 circuit low voltage Bank 1 Sensor 2  (4 cyl only has one bank)

P2004  Intake manifold runner control stuck open Bank 1

P2009  Intake manifold Runner control circuit low Bank 1

P2177  System too lean off idle Bank 1

The car still runs fine and doesn't seem to have any vacuum leaks as far as I can tell. It does have a rough idle at first but then it smooths out after a minute or so and runs fine after that.

{black}:excitement: {black}:hi:  

Kind regards,

A long time fan and subscriber to your Youtube channel