It’s important to understand the basics of catalytic converter chemistry and how catalytic converter failures are diagnosed.
Although modern OBD II technology has simplified catalytic converter diagnostics, it’s still important to understand the basics of catalytic converter operations when dealing with a P0420 or P0430 diagnostic trouble code (DTC). DTCs P0420/P0430 indicate that catalyst efficiency is below predetermined thresholds on cylinder banks 1 and 2, respectively.
If a replacement does not meet or exceed the flow characteristics of the original, it could mean more than a loss of power.
Understanding catalytic converter efficiency codes can be a long road to a happy customer or an expensive comeback.
The engine management system does not know there is a crack in the manifold.
Catalytic converters have become a hot product among thieves. Has the global pandemic played a part?
If an engine breakdown were to occur, debris may be deposited in the converter through engine exhaust ports.
Catalytic converter replacement is easy – it is the ordering and associated paperwork that can be difficult.
The culprit could be a misadjusted shift cable.
Understanding modern ignition systems will help complete preventative engine maintenance during tune-ups.