Quote:
Originally Posted by guybo
I got the car back from the muffler shop 2 days ago and I haven't put 50 miles on it yet. I got p0420, P119F and P219A.
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420 is catalyst efficiency, so I'm going to assume it's a catless UEL.
That's what's causing your check engine. No cat = automatic 420, and the detection threshold for 219/119 is so sensitive the UEL is setting it off.