how do I clear the computer engine light so I can pass the smog test ?
Asked by Guru9VP6QL Apr 23, 2021 at 05:41 AM about the 2001 Nissan Frontier 2 Dr XE Extended Cab SB
Question type: General
I need to pass the smog test. The test says the EGR is incomplete. I can not f-
ing figure this out. I am doing everything that they want me to do... S.O.S....
3 Answers
lincolnscott49 answered 3 years ago
disconnecting the battery should clear the code .Did you repair the EGR problem?
Clearing the code by disconnecting the battery will not pass smog test. U need to repair the problem that triggered the code. Once it's fixed, it will clear by itself after u drive it. If u fixed it and cleared the code, u still need to drive it so the ECM will scan the entire system otherwise it will not pass smog.
lincolnscott49 answered 3 years ago
No code stored will clear by itself even when the problem is repaired, however you do need to repair the problem to pass. The EGR system is not that complicated and is usually a vacuum hose leak at the EGR valve control solenoid or a dirty EGR valve built up with carbon preventing the needle from lifting when vacuum is applied to the diaphragm, or bad EGR temperature sensor.
