My 93 SR threw a CEL last night on the highway so I pulled the code today and got:

1 fast blink

4 slow blinks
3 fast blinks

I also got 3 slow ABS light blinks, but don't have a clue what this means.

I know the 1 fast blink is a oxygen sensor code, and the 4 slow blinks + 3 fast blinks are fuel system or oxygen sensor heater circuit problem, so I'm thinking it's probably the oxygen sensor that went bad. Here's the twist though, it didn't come on today at all, and I was driving for a good 20 mins with the engine fully warmed up and at operating temperature. What could this be?

 

well....I could be wrong here....

But I'm thinking the o2 sensor is going bad.

Again, this is just a hunch.

 

anyone else?

 

replace your o2 sensor

 

Not always the 02 sensor. I'm having the same problem and I've tried just about every damn thing. Try using the terms "code AND 43" along with my username in a search and you'll see what I mean. G/L.