VAF check engine light on code number #2

[1989 8secmkiii owner]

ya i checked the manual i have its says code #2 but any ways i already fixed it check engine light is gone. it is true that code 12 is related to rpm but thats what my manual says about code #2. But new problem came out the light came on which is left to door signal light above the check engine light. finally just for your guyz info i am a vw guy so i dont know much about toyota.