DTC P0421 code: Warm up catalytic converter, bank 1 -efficiency below threshold. Fault type Drive system in category Flue gas emission defect.
Error or fault (reason, cause): Catalytic converter, wiring, HO2S 2.
Error Code DTC / Diagnostic Trouble Code:
P0421.
Hexadecimal Code: 0421.
The orange color P0421 indicates car fault. What to do when the car started to show P0421 error. After starting the car a signal P0421 lights orange. What means P0421 in orange color. Auto P0421 error repair code.
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