Exhaust muffler carparts suddenly stopping catalytic cons Mitsubishi outlander: warm up catalyst efficiency → below threshold P0421 code: warm up catalyst efficiency below threshold (bank 1)
P0421 Code: Warm Up Catalyst Efficiency Below Threshold (Bank 1) - In
Tech tips (by alldata): bug causes dtc p0171 on mitsubishi
Outlander mitsubishi p2096 alternator bank p0421 problems catalyst threshold efficiency warm below signs
I have a 06 mitsubishi endeavor that has an error code p0421. the .
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