P0430 TOYOTA - Catalyst System Efficiency Below Threshold Bank 2
- Exhaust tube
- Intake air leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
- Improper ignition timing
- Engine Control Module (ECM)
- Three way catalyst converter Bank 1 does not have enough oxygen storage capacity.
The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2 sensor).
A three way catalyst converter (Manifold) with high oxygen storage capacity will indicate a low switching frequency of heated oxygen sensor 2. As oxygen storage capacity decreases, the heated oxygen sensor 2 switching frequency will increase.
When the frequency ratio of heated oxygen sensors 1 and 2 approaches a specified limit value, the three way catalyst malfunction is diagnosed.
P0430 2007 TOYOTA CAMRY
P0430 2008 TOYOTA CAMRY
P0430 2009 TOYOTA CAMRY
P0430 2010 TOYOTA CAMRY
P0430 2001 TOYOTA HIGHLANDER
P0430 2002 TOYOTA HIGHLANDER
P0430 2003 TOYOTA HIGHLANDER
P0430 2004 TOYOTA HIGHLANDER
P0430 2005 TOYOTA HIGHLANDER
P0430 2006 TOYOTA HIGHLANDER
P0430 2007 TOYOTA HIGHLANDER
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