WHY WONT MY CAR PASS EMISSION IF THE O2 SENSOR ...
2002 Mitsubishi Galant
Why won't my car pass emission if the o2 sensor was replaced and the readiness keep failing after I put 345.9 miles on it
Tuesday, December 11th, 2012 AT 9:14 PM
Did the light come back on?
Drive cycles are very specific way of driving a car to run the monitors. Your normal driving does not run the monitors no matter how much you drive it. Go to a shop and have them do the drive cycle for you.