Ford Mondeo Mk4 Citroen C4 Camshaft Position Sensor 2.0 TDCI 9661135980

Ford Mondeo Mk4 Citroen C4 Camshaft Position Sensor 2.0 TDCI is a component from the Engine sensors and switches group, designed for diesel engines. It is responsible for precisely determining the position of the camshaft, which allows the engine control unit to properly dose fuel and control the combustion process. A properly functioning sensor stabilizes the engine's operation, improves performance, and facilitates the diagnostics of the fuel injection system.

Specifications and technical data

• SKU: 9661135980
• Mark: Ford
• Condition: Used
• OEM Part Number: 9661135980
• Substitutable numbers: 9661135980, 96 611 359 80
• Fuel type: Diesel
• Part type: Sensor
• Category: Engine Sensors & Switches

The role of the camshaft position sensor in a diesel engine

The camshaft position sensor in a 2.0 TDCI engine is responsible for generating a synchronization signal between the camshaft and the crankshaft. Based on this signal, the engine control unit determines the fuel injection timing and controls other auxiliary components. In diesel engines, accurate information about the camshaft position is crucial for maintaining proper injection pressure, reducing smoke, and ensuring smooth idling. A worn or damaged sensor can cause starting problems on a warm engine, intermittent stalling, power loss, or entering limp mode. Replacing it with a functional unit from the same design group restores correct timing synchronization with the injection system and facilitates further diagnostics of any potential faults.

Purpose and fitment for Ford Mondeo Mk4 2.0 TDCI

The presented sensor has been designed for use in the timing system of the 2.0 TDCI diesel engine installed in the fourth-generation Ford Mondeo. This ensures the correct mounting geometry, the appropriate type of electrical connector, and signal characteristics consistent with the engine control unit's requirements. As a result, electrical and mechanical compatibility with the vehicle's factory installation is maintained. The component belongs to the group of parts responsible for precise control of the engine's operation, which is why its selection should be based on compatibility with the timing system and fuel type. In the case of diesel engines such as the 2.0 TDCI, the correct operation of the sensor has a direct impact on starting parameters, dynamics at low RPM, and stability under load.

Benefits of using an original Ford sensor

Using a sensor from the Ford brand offer allows you to maintain the factory parameters of the engine control system. The original design ensures:

• appropriate quality of the housing materials and the measuring element,
• proper resistance to temperature and vibrations in the engine compartment,
• a stable output signal across the entire RPM range,
• consistency with factory diagnostic procedures. Thanks to this, the engine control unit receives a repeatable, clear signal, which reduces the risk of errors related to timing synchronization. In practice, this translates into more predictable vehicle behavior, easier starting, and better cooperation with the injection system.

Performance characteristics and application in service practice

Replacing the camshaft position sensor is a standard service procedure in the event of errors related to synchronization or problems with starting a diesel engine. In workshop practice, this component is often replaced after prior verification of the electrical installation and the mechanical condition of the timing system. Using the correct sensor in a Ford Mondeo Mk4 2.0 TDCI allows you to:

• restore correct camshaft position readings,
• minimize the risk of incorrect fuel dosing,
• limit the occurrence of errors in the control unit's memory,
• stabilize engine operation across the full load range. This solution is particularly important in vehicles used intensively, where precise cooperation of engine sensors has a direct impact on the durability of the injection system and driving comfort.

Expanding knowledge and related components

In the case of diesel engines, such as TDCI units, performance and smoothness are influenced not only by the camshaft position sensor itself but also by the injection system and turbocharging. If you want to better understand how auxiliary components work together in modern diesel engines and how their condition affects power and flexibility, it is worth reading the article describing the regeneration of the V6 CDI unit: The second life of the Mercedes OM642 engine – how injectors and the turbocharger restore the power of the 3.0 V6 CDI. 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 temperature sensors, pressure switches, or additional position sensors, check the available parts in the Ford engine sensors and switches category.