1995 4runner 5speed
CEL Code #25 Air / Fuel Ratio Lean Indicator
#26 Air / Fuel Ratio Rich Indicator

Hello to all.
My 4runner has been given the cel light for a while so I checked it today and got cel code #25 & 26. The 4runner also doesnt start right up, it takes some effort.

This is usually the O2 sensor but you say your getting the 26 also.
These are "Fuel air ratio malfunctions"
Take a look at the diagnostics and probable causes.


The problem is the O2 sensors ar EXPENSIVE (~$125) just to find out you have a different problem causing the malfunction.
Good luck