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Diagnose a p0420 fault code with explination bank 1 o2 sensor fault P0420 code fault bank sensor diagnose light P0420 code toyota catalyst system 2008 camry scanner bank efficiency threshold below obd codes do obd2 fault dtc land causes
P0420 code: catalyst system efficiency below threshold (bank 1)
P0420 Code: Catalyst System Efficiency Below Threshold (Bank 1)
Diagnose A P0420 Fault Code With Explination Bank 1 O2 Sensor Fault