Honda Insight Forum banner
lambda sensor faulty
1-1 of 1 Results
  1. Problems and Troubleshooting
    A couple of months back the engine warning light came up and was diagnosed as upper O2 sensor faulty. At first nothing seems to have changed but now the car seems even more economical and today it returned 93.1mpg on a 100 mile round trip via motorway at average 60mph!!! It seems to go into lean...
1-1 of 1 Results