Regardless of whether it is a -561 pink label or an updated (white label) or -951, the ECU is not cleared from the suspect list. As rhaire says, the reputation the -561 has is due to its hybrid circuit, which manifests as a no- start - a permanent no-start. But that reputation may have nothing to do with your car's specific behavior.

Certainly there is a list of other components feeding information to the ECU, in addition, which could go intermittent. All of us LH2.4 owners wish the OBD codes were not so vague. You might weigh Mr. Haire's suggestion to swap in a spare ECU to eliminate it from that list, and do it on your own terms. It's 5 minutes for you to do it, and you can find a spare on your own terms, where your mechanic is going to do the same thing and not necessarily get you the same price you can get, nor charge you for 5 minutes labor.

I think the point Bob was making is getting a spare, if yours is a -561, is worthwhile, even if the ECU isn't this problem, because so many of the -561 eventually fail with the no-start symptom.
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Art Benstein near Baltimore

Don't wear polka-dot underwear under white shorts.