After replacing cat back build by Ontirio Exhaust ( in past bought catalytic con for 1994 worked), after placing it I got P2423 bank 1, Evap not. I replaced the upstream and downstream sensors per Monro diagnosis estimated cost 1512 for 3 sensors. My car has only 2 and bought online Denso sensors an…

What is this? catalytic con? The cat back exhaust should not creat the codes you are getting.

P 2423 HCAC-System ( Bank 1) just gave me one mechanic who scanned my car with Snap-on Tablet size tool. He did not know next step, asked me to go to autozone. Same thing was done by Monro who asked me to pay 67 dollars and suggest to repalce all O2 sensors. I did and code is still coming. Not …

You need a new catalytic converter! Get that thru your head! Tester

Which one , Manifold or the one in the central pipe with flex pipe? Sorry, I have little knowledge about car and already spent over 400 dollars listening various mechanics and Monro suggestion to replace all o2 sensors ( their estimated cost was 1000), I asked for help.

This is going to be interesting, Someone answer me that this is cat problem and get it through my HEAD. I asked him which one? Manifold or cat back in mid pipe? What is creating the problem ? Do I need a smoke test ? Thank you sham

There are tests that can be done to determine if the pre-cat is bad. [image] Should I Replace the Front or Rear Catalytic Converter (RESOLVED - Click To View) My car did not pass the California smog test because high HC (PPM) and NO (ppm) at 15 and 25 mph. The smog technician told me to r…

Thank you, Is it testing with temperature gun ?

https://www.google.com/search?q=infrared+thermal+gun&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiS64jcivXlAhXeKDQIHeQtAPoQ_AUIEigC&biw=1366&bih=626 Tester

Fault P2423; HCAC System relates to the rear catalytic converter on a Partial Zero Emission Vehicle (PZEV). Since this problem seems to have started after you replaced the rear catalytic converter with perhaps an inexpensive aftermarket unit and possibly the wrong application the problem is likely …

[image] Nevada_545: Partial Zero Emission Vehicle I’m trying to think what that phrase means … lol … I mean any car is a partial zero emission vehicle. Some are just more partial than others. :wink:

2005 Toyota Camry P2423

Maintenance/Repairs

ShamKarki November 20, 2019, 3:06am 18

My bad, did not know that my car has CA emission therefore it was giving that code.

Now has to change rear Cat.

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2005 Toyota Camry P2423

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