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P0401 – 1998_HONDA_CIVIC

Code : P0401
Make : 1998_HONDA_CIVIC
Description : P0401 1998 HONDA CIVIC Exhaust Gas Recirculation Insufficient Flow
Possible causes :
– Exhaust Gas Recirculation Valve harness is open or shorted
– Exhaust Gas Recirculation Valve circuit poor electrical connection
– Faulty Exhaust Gas Recirculation Valve
– Exhaust Gas Recirculation Valve clogged
– Exhaust gas leaks
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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