Questions & Answers for: codes po420

CTS CODE PO420 CHECK ENGINE LIGHT ON CODE READ PO420 most of the time its the sensor that cause this,id try replacing the sensor on it,that usually fixes that code,but you have to get the code cleared

...po420,po441, these 3 codes are the ones scanner brings up,po440,po441,po420 P0420 is catalyst system efficiency below threshold (bank 1) P0440 is evaporative emission control system malfunction P0441 ...

...po420. My car is due for smog check. thank you. If the code has cleared on its own then you need to disconnect the battery and re-connect it. This will clear the codes out of the memory. If you don't ...

...codes p1768,po300,and a po420. what does this mean? I have tow of the three requested codes. po300 is misfire detected at multiple cylinders. See po301-306 represent the cylinder # misfire. So 301 is ...

what is this code po420 bank 1 in a che?vy monte what is this code po420 bank 1 in a chevy monte carlo ? How can i clear this code? I could go on and on about Po420 code but it's easyer to tell you to

code po420 on scan tool but o2 sensor was replace 2 months ago code po420 Hello and welcome. the code P0420 is for a bad cat. converter. replacing 02 sensors wont repair this code. the code simply's ...

po420 is gone. i just replaced the egr tube, cleared the codes, and now the po401 is back. car sounds better, but i wanna get the code and service engine line off. any ideas? Well, the po401 is saying

check engine light is on i have a 98 honda accord trying to find out what these codes are, po420,po401,p1456 Go to google & type in ---OBD2 Codes 1998 honda accord PO420 etc

What could be wrong PO420 catalyst efficiency below threshold There is a code PO420 catalyst below threshold now appearing with the engine light on. We have the plugs replaced when misfire code came. ...

PO420 Codes - Eastern Catalytic www.easterncatalytic.com/education/tech-tips/pesky-p0420-codes/ One of the most annoying is the persistent PO420 diagnostic code (Catalyst System ... not only shows its