DTC 16805 Warm up catalyst efficiency below threshold (bank 1).. I STFA and
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DTC 16805 Warm up catalyst efficiency below threshold (bank 1).. I STFA and
only found reference to this code with aftermarket downpipes. I till have stock DP's. First really cold night, down to 20 or so. No, I didn't let it idle to warm up, started driving right away like I always do. CEL came on about 15 minutes after I started driving. Car runs fine. Rear o2 sensor? I haven't replaced thsoe yet, only the fronts.
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I did clear. I'll see if it comes back in the AM.
But it's not THAT cold out; I was in 38 below last year withouit a CEL. Guess I'll see what happens in the AM.