June 9th 2025 SHARE: P0404 / GENERIC Exhaust Gas Recirculation Control Circuit Range/Performance Notes:
June 9th 2025 SHARE: P0404 / GENERIC Exhaust Gas Recirculation Circuit Range/Performance Notes: Possible causes:Short to ground in EGR signal or Reference circuitsShort to voltage in EGR ground or signal circuitsBad EGR valveBad PCM wiring issues due to chafing or loose terminals