Questions & Answers for: obd2 code po420

...PO420 NEED TO FIX SO I CAN GET IT SMOGGED IN CA. P0174 means Fuel Trim too Lean (Bank 2) P0401 means Exhaust Gas Recirculation Flow Insufficient Detected P0420 means Catalyst System Efficiency Below ...

...Like You Might Have A Bad Oxygen Sensor.They Should Be Replaced Every 30,000 Mi,Try That And See If That Clears The Problem.And Then Have The Code Cleared If You Have The OBD2 Scan Tool..Good ...

...obd2 trouble code table can help you understand the meaning of code, for po420, you can try: Check for exhaust leaks at the manifold, pipes, catalytic converter. Repair as required. Use a scope to ...

...code of p0420,what could cause this to come up as a false reading? engine light came on ,it runs fine,i was told bank 1 02 sensor PO420 & PO430 --are worn out Exhaust ConvertersYou can research ...

obd2 po420 code P0420.....Catalyst System Efficiency Below Threshold (Bank 1)

...obd2 code Converters should last 12 to 14 years Next --if it has completely failed & melted the honeycomb inside,then it is blocked & you go about 30 mph at best A clogged gas filter will do ...

Have a code 0430 Failed Exhaust Converter (Bank #2), so I assume you have a V6 in order to have a bank #2 You should google your make,model etc & put OBD2 Code PO420 or 430 & read up on it

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

...PO420 Bank #1) PO442-small leak in Evap System It's all on the internet ,if you Google your codes & study OBD2 Systems Type: OBD PO 442 On a 2005 vehicle-- All-- the ignition coils will be bad ...

...OBD2 fault code lists and look up the codes for yourself, the P0430 and P0420 are worn out Catalytic Converter fault codes. By the way the "0" is a number not the letter, a common mistake by non ...