I had the following engine codes
P1133 - HO2S Insufficient Switching Bank 1 Sensor 1 P0133 - O2 Sensor Circuit Slow Response Bank 1 Sensor 1 P0130 - O2 Sensor Circuit Bank 1 Sensor 1
The mechanics couldn't' figure out why after giving them $$$.
After reinstalling the ECM myself, (just taking it out putting it back in), the 02 sensor codes disappeared, but I still have the EVAP codes.
P0442 - EVAP System Leak Detected (small leak) P0455 - EVAP System Leak Detected (large leak)
I think the EVAP codes might be the result of a faulty electrical system. What is the next step to take assuming the solution has something to do with the electrical system? I was thinking maybe
- replacing a wire harness?
- cleaning some connector pins?
I am not a mechanic. If simply resintalling the ECM solved my 02 sensor problem, maybe the EVAP problem is related to it somehow.
Any advice what component to replace/inspect next?
car model: Saturn Ion 2003