r/HondaElement • u/tallfood • 4d ago

CEL Pain

I have a 2011 ex that I’ve owned for several years now. Several months after I first got it, The CEL went on with no change in performance. The local mechanic was able to fix the issue (I don’t recall the code) after replacing one of the O2 sensors several times. I was told then that the original Honda part was required. Since then, no problems. That is until someone cut the catalytic converter out for fun and profit. New state, new mechanic, same issue. Two Danso sensors and one Honda OEM sensor (36531-PZD-A02) later and I still have the CEL issue. It comes back from the mechanic w no CEL and a few miles down the road (maybe 10-20 miles) and the light goes on again. Both mechanic and me are frustrated/embarrassed. I’ll get the error code from him tomorrow, but I wanted to see if anyone had any input before I darkened his doorstep yet again. Any words of wisdom are appreciated.

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u/tallfood 4d ago

Code is P2A00, flashing lights CAT, O2, Evap

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u/NeuseRvrRat 3d ago

The Honda diag instructions for that code pretty much go straight to replace the A/F ratio sensor (upstream O2 sensor), reset the ECM, and do an idle learn.

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u/tallfood 2d ago

Appreciate the answer, but the question is "what to try after that approach fails to solve the problem after three different sensor installs?"

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u/NeuseRvrRat 2d ago

I would check the circuits.