Check-Engine

[Altima-man]

Strange ???, my check engine light comes on only when I'm driving on the highway, normally above 2500 RPM, once turned on, I only have to decrease my speed "drop 500 RPM" and the light turns off.

If I'm driving above 3000 rpm, the light does not turn on, I've replaced the EGR valve with a use one given from a friend, still the same problem, I've replace the air-exhaust sensor with a new one, still the same problem.

Any idea, it seems it may be a vacumm problem or the EGR valve.

I appreciate our help

[NISTECH]

whats the code?

[[s3]]

Played with the ECU lately?

[SLOW KA_]

check the ECU and remember the code...