Error code

Infiniti All models code P1421

No approved translation for this record yet; showing the original text.

Meaning

Cold start emission control - malfunction

Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.

Intake/exhaust leak/blockage, mechanical fault, idle speed control (ISC) system, ignition control, engine coolant temperature (ECT) sensor, H025, ECM

Solution steps are not shared for faults that may be dangerous.

No do-it-yourself solution is given for this fault. For your safety, call an authorised service.

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