OBD Code P0401

Exhaust Gas Recirculation Flow Insufficient

CodeP0401
DescriptionExhaust Gas Recirculation Flow Insufficient
Possible CausesThe EGR flow is below the expected level. Common cause: clogged EGR passages.
SystemEmission Controls

What Does P0401 Mean?

Exhaust Gas Recirculation Flow Insufficient. This diagnostic trouble code (DTC) is stored when the vehicle's onboard computer detects an issue with the emission controls.

Code Breakdown

P = Powertrain code

0 = Generic (SAE standard)

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