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What does p0420 stand for?

p0420 stands for Catalyst System Efficiency Below Threshold

This definition appears very rarely

Samples in periodicals archive:

P0420 OBD-II Trouble Code Technical Description. Catalyst System Efficiency Below Threshold (Bank 1) What does that mean? This diagnostic trouble code (DTC) is a...
P0430 - Ford; Type: Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled: Description: Catalyst System Efficiency Below Threshold Conditions
P0420 - Ford; Type: Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled: Description: Catalyst System Efficiency Below Threshold Conditions
Re: P0420 Catalyst system efficiency below threshold (bank1) o2 or cat? (Integra_Boi)
Suzuki P0420 OBD EOBD JOBD Vehicle DLC Code Lookup Suzuki Catalyst System Efficiency Below Threshold
P0420 MAZDA P0420 MAZDA - Catalyst System Efficiency Below Threshold Bank 1