2009 honda civic lean code

Question

Hi

My 2009 Honda Civic stalls and stops when I slow down. It starts up right away again. When going on highway, its fine and lots of power when I rev it???

What could that be?

Answer 1

HI there,

This code is normally caused by a leaking vacuum. It could be the intake manifold gasket, or one of the vacuum lines. Also a dirty air filter can cause this as well as a problem with the front O2 sensor.