Code P0421

04 Nov 2023

Code protege mazda obd 1999 driving minutes after P0421 code: warm up catalyst efficiency below threshold (bank 1) P0421 code! help!

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P0421 – warm up catalytic converter bank 1 efficiency below thresholdP0421 check engine light fix #catalyticconverter #o2sensor #p0421 Obd code p0421, 1999 mazda protege — car forums at edmunds.comI have a 06 mitsubishi endeavor that has an error code p0421. the.

Solving the P0421 Code: Catalyst Efficiency Below Threshold | The Motor Guy

P0421 – warm up catalytic converter bank 1 efficiency below threshold

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Code p0421 catalytic converter: my car had 2 p0421 codes, page 3

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P0421 — Warm Up Catalyst Efficiency Below Threshold (Bank 1) – eEuroparts

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