MIL ON WITH DTC P0401 AND/OR P0404
STORED IN THE ECM
IF YOU CONFIRM
The MIL is ON and DTC P0401 (EGR A FLOW INSUFFICIENT) and/or P0404 (EGR A
CONTROL) is stored in the ECM.
AND
There are no drivability concerns.
ACTION
1. Confirm the current ECM part number.
2. Reprogram the ECM, if applicable.
