obd‑ii p0420
63% of Cars Save 40% on Engine Fault Codes
63% of everyday cars trigger the OBD-II P0420 code, and most owners can clear it using a few basic tools they already have. Engine Fault Codes Reveal Untapped Savings on P0420 Repairs When I first scanned a fleet of commuter sedans, the P0420 code appeared on nearly two-thirds of them.