[Norm K]

On certain Toyota and Lexus vehicles, issues that you might not expect to cause these lights, do.

My GX470 did exactly what you indicate your Nissan did. I reset the code (lean on both banks) but the lights on the dash illuminated a few days later Too lazy to diagnose the cause, I reset the code again. This time I drove it for over a week before the lights came back on. The car was running fine so being the inherently lazy guy I am, I kept doing this for awhile. Several times, the lights would go out on their own, then pop up again after various periods of time.

I finally overcame my laziness and popped the hood and pulled the engine cover. It took about fifteen seconds to find a cracked vacuum hose. Spent a few minutes replacing that and it's been fine ever since (probably 10K miles ago).

I figure the vacuum leak was small enough that the ECU could sometimes adjust for it - even to the point of resetting the lights itself, while at other times it could not, for whatever reason.

Anyway, this is my long-winded way of saying that you shouldn't discount systems that seeming have nothing to do with your traction control and ABS.

Good luck!

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