What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
2Original wording in English
BUICK, CHEVROLET, PONTIAC, SATURN
Reported code forms P0404
SERVICE ENGINE SOON (SES) LIGHT ILLUMINATED, MULTIPLE POWERTRAIN CONTROL MODULE (PCM) DIAGNOSTIC TROUBLE CODE (DTC) P1404 AND/OR P0404. 06-06-04-003 NOT YET RECEIVED. *TT UPDATED 04-27-07. *KB
BUICK, CHEVROLET, PONTIAC, SATURN
Reported code forms P0404
DIAGNOSTIC TROUBLE CODE P0404 EGR CONCERN. *TT
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.