Ford Fiesta Mk5 Engine Map Manifold Pressure Sensor 1S72-9F479-AC

Ford Fiesta Mk5 Engine Map Manifold Pressure Sensor is an air intake system component responsible for precise pressure measurement in the intake manifold, which allows the engine control unit to properly dose fuel. Thanks to this sensor, the power unit can operate stably, maintaining appropriate combustion parameters and correct response to load. Choosing an original Ford solution from the Lambda sensors and O2 sensors category supports proper diagnostics and maintains the efficiency of the engine control system.

Specifications and technical data

• SKU: 1439900
• Mark: Ford
• Condition: Used
• OEM Part Number: 1S7A-9F479-AC
• Substitutable numbers: 1S7A-9F479-AC, 1S7A9F479AC, 1439900, 0261230044, 0 261 230 044
• Category: Oxygen Sensors

Function and role of the MAP sensor in the Ford Fiesta Mk5

The MAP manifold pressure sensor in the Ford Fiesta Mk5 is responsible for measuring absolute pressure in the intake manifold and transmitting the signal to the engine control unit. Based on this data, the ECU selects the fuel dose, corrects the ignition timing, and monitors the operation of the exhaust gas recirculation system. A properly functioning sensor helps reduce fuel consumption, stabilizes idle speed, and supports compliance with emission standards.

Benefits of using an original Ford sensor

Using an original intake manifold pressure sensor ensures a proper fit for the electrical installation and the operating characteristics of the Ford engine control unit. Thanks to this:

• the signal from the sensor is consistent with the injection maps stored in the ECU,
• the engine control system maintains predictable operating parameters,
• it is easier to diagnose potential faults using diagnostic testers.

This solution is particularly beneficial when replacing a component in a vehicle used on a daily basis, where operational repeatability and compliance with factory specifications are important.

Used condition and practical assembly aspects

The offered sensor comes from the used automotive electronics group, which allows for reducing repair costs while maintaining the manufacturer's original specification. Before installation, standard service procedures are recommended, such as checking connectors, socket seals, and verifying the electrical installation for any mechanical damage or signs of corrosion. A properly selected and installed MAP sensor restores correct cooperation between the intake manifold and the engine control unit, eliminating typical signs of wear, such as power loss or uneven engine operation.

Selection by numbers and compatibility with the control system

This sensor model belongs to a group of components that are selected primarily based on the OEM part number and interchangeable numbers, which allows for maintaining full compatibility with a specific version of the engine control unit and the electrical harness. In case of doubts regarding selection, it is worth using the manufacturer's catalog data or service documentation to avoid problems with signal interpretation by the ECU. A well-matched sensor supports stable engine operation both in urban conditions and under higher loads.

Expansion of the measuring system and related Ford components

If you are planning a comprehensive repair or upgrade of the engine area in your Ford and need other components from the same group, such as additional pressure sensors, measuring probes, or components monitoring the mixture composition, check the available parts in the Ford Lambda sensors and O2 sensors category.

Substantive support when choosing a used sensor

When choosing a used intake manifold pressure sensor, it is worth paying attention to the compliance of markings, the type of plug used, and the operating parameters declared by the manufacturer. Additional tips regarding the selection of engine electronics, interpretation of part numbers, and principles of safe installation can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?