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
FORD
Reported code forms P0400
MALFUNCTION INDICATOR LAMP (MIL) - MIL LAMP ILLUMINATED WITH DAIGNOSTIC TROUBLE CODE (DTC) P0400 STORED IN MEMORY. *TW
FORD, MERCURY
Reported code forms P0400
ENGINEERING IS INVESTIGATING A CONCERN WHERE THE MALFUNCTION INDICATOR LAMP (MIL) IS ILLUMINATED & CODE P0400 OR P1195 IS STORED IN MEMORY. *TT
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Historical records · 1 · Historical vehicle association; OBD-II compatibility is not established by this record.
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.