Parts for your 2018 Ford Mondeo-Crank angle sensor

2018 Ford Mondeo crank-angle-sensor: what it does and how to look after it

Yes, the 2018 Ford Mondeo is fitted with a crank-angle-sensor — more commonly called the crankshaft position sensor (CKP). This is documented in the Ford Workshop Manual for the 2015–2019 Mondeo/Fusion platform (engine management sections covering 1.5L/2.0L EcoBoost and 2.0 TDCi), Ford’s parts catalog listings for “Crankshaft Position Sensor” on these engines, and standard fault code references used by workshops (e.g., Autodata/Haynes) that show Mondeo engines setting DTCs P0335–P0339 for CKP circuit and signal faults. These technical sources confirm the CKP is present and essential to engine control on the 2018 Mondeo.

On this model, the crank-angle-sensor feeds the ECU precise crankshaft speed and position data so the car can time fuel injection and spark to the millisecond. Without a clean CKP signal, the Mondeo may crank but not start, stall, misfire, or log engine warning lights. The sensor typically reads a toothed reluctor wheel on the crankshaft and produces a waveform the ECU uses to manage ignition, fuelling, idle stability, and diagnostics.

As for servicing, the CKP isn’t a scheduled replacement item, it’s “fit and forget” unless symptoms point to trouble. Smart maintenance means:

• Watch for hard starting, sudden stalling, uneven idle, power loss, or engine light with codes like P0335–P0339.
• Inspect the sensor connector and loom near the bellhousing/front cover area for oil contamination, rub-through, or loose pins.
• Keep oil leaks in check — seepage can track onto the sensor and corrupt its signal.

If replacement is needed, a competent home mechanic can do it, but many owners prefer a workshop because access can be tight and a scan tool may be required. Typical steps are:

1. Disconnect the battery negative and allow the engine to cool.
2. Unplug the CKP connector and remove the retaining fastener.
3. Withdraw the sensor, noting the O-ring. Lightly oil the new O-ring and install the new sensor square to its seat — no shims or force.
4. Tighten to the workshop-manual spec and reconnect the harness.
5. Clear codes and, if prompted by the scan tool, perform a CKP/crank profile relearn or KAM reset so the ECU adapts quickly.

Use quality (OE or equivalent) parts and avoid magnetic debris around the tip. A quick road test with live data verification seals the job. Following the Ford Workshop Manual guidance ensures the gap, torque and routing are right, keeping the Mondeo running sweet as.

Popular questions

Where is the crank-angle-sensor on a 2018 Ford Mondeo?
On most 1.5L/2.0L EcoBoost and 2.0 TDCi engines, the CKP sits near the crankshaft at the transmission bellhousing or lower front cover area. Access varies with engine and market spec. A torch and mirror help to spot the single-fastener sensor with a two- or three-pin plug.

Do I need to program anything after replacing the CKP?
Many replacements will run straight away, but it’s best practice to clear fault codes and perform a crank/CKP relearn or KAM reset with a suitable scan tool. This helps the ECU refine misfire monitoring and timing quickly, as recommended by workshop procedures.

What are the signs the CKP is failing on a Mondeo?
Common clues include intermittent no-start when hot, sudden stalling, rough idle, surging, or an engine light with CKP-related DTCs (P0335–P0339). Wiring damage or oil contamination at the sensor plug can mimic a bad sensor, so visual checks are worthwhile.