Smart Car of America Forum banner

p0140

  1. 2009 smart code P2271 and P0140

    smart Operation and Maintenance
    I have to go to smog check for renewal. Now I have check engine light on and scanner said P2271 and P0140. so It is O2 sendor B1S2. How's replacing O2 sendor DIY? Where to Buy? Where is sensor located?
Top