Parts for your 2013 Ford Fiesta-Crank angle sensor

2013 Ford Fiesta crank-angle-sensor

Based on technical references including the Ford Workshop Manual (Fiesta Mk7 WSM, section 303-14: Electronic Engine Controls), the Haynes Ford Fiesta Petrol & Diesel 2008–2017 manual, and Autodata engine management data, the 2013 Ford Fiesta is fitted with a crankshaft position sensor—commonly called a crank-angle-sensor. Ford’s parts catalogues for the 1.0 EcoBoost and Duratec petrol engines, as well as the TDCi diesels, also list this sensor, confirming it’s standard across the range.

On the 2013 Fiesta, the crank-angle-sensor is a Hall-effect sensor that reads a toothed reluctor (usually a 36-1 wheel) on the crankshaft. The Powertrain Control Module (PCM) uses this precise crank position and speed data to fire the spark, control injection timing, manage variable valve timing, and keep the engine running smoothly and efficiently. If it drops out, the engine can be hard to start, run rough, or not run at all, and fuel economy and emissions go out the window.

There’s no scheduled replacement interval for the crank-angle-sensor, it’s a “fit and forget” item unless it fails. During regular servicing, it pays to give the sensor connector and harness a quick once-over under the bonnet—look for oil contamination, brittle conduit, or rubbed wiring near the bellhousing or crank pulley area (location varies by engine). If replacement is needed, disconnect the battery, unplug the connector, remove the retaining bolt, and withdraw the sensor with care so the O-ring isn’t torn. Fit the new unit with a light smear of clean engine oil on the O-ring, seat it fully, and tighten the bolt to the workshop manual torque specification. The air gap is not normally adjustable on these sensors, if alignment looks off, check for a damaged tone wheel or debris.

• Common symptoms: long crank/no start, intermittent stalling, misfires, erratic tacho, or limp mode.
• Typical fault codes: P0335–P0339 and related sync/phase errors.
• Good practice: keep connectors dry and clean, address oil leaks that can wick into the plug, clear codes and road test after replacement.
• If issues persist, inspect wiring continuity and PCM grounds before condemning the new sensor.

Where is the crank-angle-sensor on a 2013 Ford Fiesta?

Depending on engine, it’s usually mounted at the gearbox bellhousing reading the flywheel ring, or low on the block near the crank pulley reading a tone wheel. From above, trace the harness down the front or rear of the engine, from underneath, it’s often easier to spot with the splash shield off.

Access can be tight on EcoBoost models, a small mirror and torch help. On Duratec non-turbo engines, it’s typically a single-bolt sensor you can reach with a 1/4-inch drive and a bit of patience.

What are the signs a Fiesta’s crank-angle-sensor is failing?

Hard starting when hot, random stalls at idle, misfires around town, or no tach movement while cranking are common. The check engine light may log P0335–P0339. Wiggling the harness and seeing the engine cut out is another giveaway.

Because symptoms can mimic ignition coil or cam sensor faults, scan live data for engine RPM during crank. No RPM signal usually points straight at the crank-angle-sensor or its wiring.

Can it be cleaned, or does it need replacing?

If the tip is only dusty or lightly oily, a careful clean with electronics-safe cleaner can restore a good signal. If the sensor has internal faults, cracked housing, swelling, or water ingress, replacement is the go.

Always inspect the tone wheel for missing teeth or metal debris, and repair any wiring damage before fitting a new sensor, otherwise the new part can show the same fault straight away.