Parts for your 2016 Ford Focus-Crank angle sensor

2016 Ford Focus crank-angle sensor: purpose, servicing and real-world tips

Based on factory documentation and established trade references, the 2016 Ford Focus is fitted with a crank-angle sensor (commonly called the crankshaft position sensor, CKP). Ford Workshop Manual (WSM) coverage for Focus LZ/LS/LW models includes removal/installation procedures for the CKP in Engine section 303, Motorcraft Service wiring diagrams show the CKP circuit, common OBD-II diagnostics list P0335–P0339 for these engines. That combination of sources confirms the part is used and relevant on 1.0L EcoBoost, 2.0L GDi, ST 2.0L EcoBoost and RS 2.3L variants.

The crank-angle sensor reads a toothed reluctor on the crankshaft and sends high-resolution position and speed data to the PCM. The PCM uses that signal to trigger fuel injection, ignition timing and misfire monitoring. If the signal goes missing or erratic, the engine can be hard to start, stall, or log fault codes and drop into limp mode.

Location varies slightly by engine, but it’s typically mounted low on the block reading the flywheel/flexplate or crank trigger wheel. It’s a sealed Hall-effect sensor with an O-ring, designed to be maintenance-free, so there’s no set replacement interval—replace on fault, physical damage or contamination.

Handy checks during routine servicing:

• Inspect the CKP wiring loom and connector under the bonnet and down near the bellhousing or crank pulley for oil weep, heat-hardening, or chafing on brackets.
• If washing the engine bay, avoid blasting the sensor area and connector with high-pressure water.
• If the engine has intermittent hot-stall or no-start with a dead tacho, scan for P0335–P0339 and look at live RPM during cranking.

Replacement is straightforward with basic tools: isolate the battery, gain access from below or via the RH splash shield, unplug the connector, remove the retaining bolt, and withdraw the sensor. Lightly oil the new O-ring, seat the sensor squarely, and torque the bolt to spec as per the Ford WSM. Clear codes, then perform a crank/cam relearn if the scan tool supports it, many Focus models will self-learn after a short drive cycle including idle, light cruise, and a few gentle accelerations up to motorway speeds.

Quality matters here—OE or reputable brand sensors tend to give a cleaner signal and better longevity. If the connector or wiring is oil-soaked, fix the source of the leak and repair any loom damage to prevent repeat faults. With the CKP healthy, the Focus starts crisply, idles smoothly, and keeps fuel economy on point across the kilometres.

Does a 2016 Ford Focus actually have a crank-angle sensor?

Yes. Ford’s Workshop Manual and Motorcraft wiring confirm a crankshaft position (crank-angle) sensor across 2016 Focus engines, and standard diagnostics list CKP-related DTCs for these models.

Where is the crank-angle sensor on a 2016 Focus?

It’s mounted to the engine block reading a toothed wheel on the crank—commonly low on the block near the transmission bellhousing. Access is usually from underneath or behind the RH splash shield.

What symptoms point to a failing crank-angle sensor?

Hard starting or no-start, sudden stalling when warm, rough idle, misfire feel, a dead or jumpy tachometer during a fault, and codes like P0335–P0339. Heat-soak intermittency is common—acts up hot, behaves fine when cooled.