0
PO420 Catalyst System Efficiency Below Threshold. I believe it is catalyst system efficiency below threshold, bank 1. That is one option. Toyota had a problem with the ECM (Engine Control Module) giving this false code and manufactured a new ECM to eliminate this problem (ie. old part number 89661-0861 to new part number 89661-08062).
What else can I help you with?
What does check engine light error code p0420 mean?
Trouble code P0420 means:Catalyst system efficiency below threshold
What is check engine error code P0420 on a 2003 vibe?
Trouble code P0420 means:Catalyst system efficiency below threshold
How do you know if a catalytic converter is bad on a Lincoln LS?
You will get a Check engine light with a P0420 error code. Mine just went. Check with the dealer they are warranted for for up to 80k mileage.
Error code p0420 Ford Contour?
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
What is the Error code p0420 for a 2005 Toyota rav 4?
Trouble code P0420 means:Catalyst system efficiency below threshold
What does error code p0420 mean on a mountaineer?
Trouble code P0420 means: Catalyst System Efficiency Below Threshold (Bank 1)
What is error code P0420 on a 02 dodge stratus sxt?
Trouble code P0420 means: Catalyst Efficiency Below Normal (Bank 1)
What does error code P0420 mean on a 1998 dodge avenger?
Trouble code P0420 means: Catalyst Efficiency Below Normal (Bank 1)
97 Ford Taurus What does the error code p0420 mean?
Trouble code P0420 means: Catalyst System Efficiency Below Threshold (Bank 1)
Why does my Check engine light stay on in my 2001 Chevy Impala?
Check engine is an error. You have to go at a garage to see what is the error code, then correct the problem.
96 ford explorer What does the error code p0420 mean?
Catalist efficiency below threshold -Bank 1
Error code P0420 2000 Honda CR-V?
It's an Emission Control Error Code DTCP0420: Catalytic System Efficiency Below Threshold NOTE: If some of the DTCs listed below are stored at the same time as DTC P0420, troubleshoot those DTCs first, then recheck for DTC P0420. P0137, P0138: Secondary HO2S (Sensor 2) P0141: Secondary HO2S (Sensor 2) Heater USUALLY (but not always) it's an Oxygen Sensor that's bad. If they both check out okay you will probably need to have the catalytic converter replaced.
