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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P0411INCORRECT UPSTREAM AIR FLOW DETECTEDManufacturer communications
4Original wording in English
FORD
Reported code forms P0411
SOME VEHICLES MAY EXHIBIT AN INTERMITTENT MALFUNCTION INDICATOR LAMP LIGHT ON WITH DIAGNOSTIC TROUBLE CODE (DTC) P0411 STORED IN MEMORY. *TT
FORD
Reported code forms P0411
SOME FLEX FUEL VEHICLES MAY EXHIBIT AN INTERMITTENT MALFUNCTION INDICATOR LAMP ON WITH A DIAGNOSTIC TROUBLE CODE P0411 STORED IN MEMORY. *TT
FORD
Reported code forms P0411
VEHICLES BUILT WITH A POWERTRAIN CONTROL MODULE (PCM) CALIBRATION STRATEGY MAY CAUSE THE VEHICLE TO ERRONEOUSLY ILLUMINATE THE MALFUNCTION INDICATOR LIGHT (MIL) WITH DIAGNOSTIC CODE P0411 (INCORRECT UPSTREAM AIR FLOW…
FORD
Reported code forms P0411
SOME FLEX FUEL VEHICLES MAY EXHIBIT AN INTERMITTENT MALFUNCTION INDICATOR LAMP LIGHT ON WITH A DIAGNOSTIC TROUBLE CODE P0411 STORED IN MEMORY. *TT
Check vehicle applicability
1A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | TAURUS | 2000 |
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.