Parts for your 2016 Ford Fiesta-Crank angle sensor

2016 Ford Fiesta crank-angle sensor: what it does and when to replace it

Yes, the 2016 Ford Fiesta does use a crank-angle sensor — Ford typically calls it the crankshaft position (CKP) sensor. This is documented in the Ford Workshop Manual (WSM, Section 303 – Engine Management) and widely covered by service databases like Autodata and Haynes. The Fiesta’s PCM relies on the CKP signal for spark timing, fuel injection sequencing, and misfire monitoring, working alongside the camshaft position sensor on Ti‑VCT/EcoBoost engines.

On a 2016 Fiesta, the CKP sensor reads a toothed wheel on the crankshaft to pinpoint crank angle and engine speed. If that signal drops out or goes noisy, the engine can be hard to start, run rough, or stall. It’s not a routine service item, but it’s critical to how the Fiesta runs every day under the bonnet.

Typical signs the CKP may be on the way out include:

• Long crank, no start, or random stalling when hot
• Misfires, poor fuel economy, flat spots
• Engine light with codes like P0335–P0339
• Tacho dropouts or erratic idle

Replacement is straightforward for a competent home mechanic, but many owners prefer a workshop. The sensor is mounted to the engine block and reads the crank trigger wheel (position varies by engine variant — front pulley or flywheel end). A basic approach is:

• Disconnect the battery negative and let the car sit a few minutes
• Unplug the sensor, remove its retaining bolt, and withdraw the sensor
• Inspect the connector and loom for oil wicking, heat damage, or chafing
• Fit the new sensor with a fresh O‑ring if applicable, and torque to spec per the Ford WSM

Tips a mechanic in Australia or New Zealand would give: always use a quality OE‑spec sensor, keep the sensor tip and trigger wheel clean, and route the harness exactly as factory to avoid electrical noise. After fitting, clear any codes and carry out a drive cycle, some Fiesta powertrains may adapt automatically, while others benefit from a scan‑tool crank relearn procedure noted in service literature.

As part of regular servicing, there’s no scheduled replacement, but it’s smart to check the CKP connector condition, look for oil leaks tracking down onto the sensor, and ensure good earths and battery health — low voltage can mimic sensor faults. With the right part and proper installation, a CKP on a Fiesta should go the distance for many kilometres.

FAQs

Where is the crank-angle (crankshaft position) sensor on a 2016 Ford Fiesta?
It’s bolted to the engine block and reads a toothed wheel on the crank. Depending on the engine — 1.0 EcoBoost, 1.6 Ti‑VCT, or diesel — it’s typically at the flywheel end or near the front pulley. Access is from underneath or through the wheel arch, so safely raise the car if needed.

What fault codes point to a bad crank-angle sensor on a Fiesta?
Common CKP‑related codes include P0335, P0336, P0337, P0338, and P0339. You might also see misfire codes if the signal is intermittent. Always check the wiring and connector first, as heat or oil contamination can cause the same symptoms as a failed sensor.

Do you have to program or relearn anything after replacing the sensor?
Many Fiestas will run fine after replacement once codes are cleared, but some powertrains benefit from a crank variation relearn or a brief drive cycle to refine misfire detection. A workshop scan tool can perform the relearn if your PCM strategy calls for it, as noted in Ford service information.