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.
P0451EVAPORATIVE EMISSIONS CONTROL SYSTEM PRESSURE SENSOR RANGE/PERFORMANCEManufacturer communications
3Original wording in English
FORD
Reported code forms P0451
Some of the vehicles listed in the Model statement above may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P0451 stored in the powertrain control module (PCM). This may be…
FORD, LINCOLN
Reported code forms P0451
Some 2018-2021 EcoSport, Expedition, Navigator; 2019-2021 Ranger; 2020-2021 Escape, Corsair, Explorer, Transit; 2021 Bronco, Bronco Sport, Edge, Nautilus, F-150, Mustang; 2019-2022 Transit Connect; 2020-2022 Aviator,…
FORD
Reported code forms P0451
SOME VEHICLES EQUIPPED WITH THE 4.2L ENGINE MAY EXHIBIT DIAGNOSTIC TROULE CODE (DTC) P0451 (EVAPORATIVE EMISSIONS CONTROL SYSTEM PRESSURE SENSOR RANGE/PERFORMANCE).
Check vehicle applicability
3A 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.