Code P0431 Warm Up Catalyst Below Threshold
#1
Code P0431 Warm Up Catalyst Below Threshold
You guys think this is the air blower? It doesn't usually happen at startup. It happens randomly long after warm up. Usually cruising down the highway, but that's where I usually am anyway. If I clear the code, it comes back in a day or two.
Thread
Thread Starter
Forum
Replies
Last Post