Parts for your 2013 Ford Focus-Crank angle sensor

2013 Ford Focus crank-angle sensor

Based on the Ford Workshop Manual for the 2013 Focus (Engine Controls/Emissions — CKP Sensor procedures), the Motorcraft PC/ED diagnostic manual for DTCs P0335–P0336, and widely used trade databases (e.g., Autodata/Haynes), the 2013 Ford Focus is absolutely fitted with a crankshaft position sensor — commonly called a crank‑angle sensor (CKP). It’s fundamental to engine management on the 2.0L Ti‑VCT petrol, 1.0L EcoBoost, and 2.0L EcoBoost ST engines.

On a 2013 Focus, the crank‑angle sensor tells the ECU exactly where the crankshaft is in its rotation and how fast it’s spinning. Paired with the cam sensor, it lets the ECU time fuel injection and spark, control variable valve timing, and validate misfire monitoring. Lose that clean signal and the car can be hard to start, run rough, or not run at all.

It’s not a routine “service item” like oil or filters, but it does benefit from a once‑over during scheduled servicing. Technicians typically check the sensor connector for oil intrusion, brittle insulation, rubbed‑through loom near the front subframe, and metal debris on the sensor tip. On these Fords the CKP mounts to the block and reads a reluctor on the crank/flywheel, location is usually low and toward the gearbox side, so road grime and splash can be a factor.

• Typical symptoms of a failing CKP: intermittent no‑start when hot, random stalling at idle, poor acceleration, erratic tach, and DTCs P0335/P0336.
• Basic replacement outline: disconnect the battery negative, raise and safely support the car, unplug the connector, remove the single retaining bolt, twist and withdraw the sensor, lightly oil the O‑ring on the new unit, refit, and torque to the workshop spec.
• Best practice: use a genuine/Motorcraft or OE‑quality sensor, cheap pattern parts can give noisy signals that the ECU won’t love.
• After replacement: clear codes, check live RPM signal on a scan tool, and perform a crank profile relearn if the scan tool/ECU requests it (Ford IDS/Forscan can run the misfire monitor profile correction). Let it reach operating temp and road‑test.
• Prevention: keep the lower engine splash shields intact, repair loom clips so the harness can’t chafe, and avoid soaking the connector during engine bay cleaning.

There’s no set kilometre interval to swap the CKP, it’s replaced on condition. On a Focus, access is typically from underneath, most workshops allow about an hour, depending on engine and splash‑guard setup. If the car has recurring hot‑soak no‑starts and no other obvious faults, this little sensor is often the hero or the villain.

Popular questions

Where is the crank‑angle sensor on a 2013 Ford Focus?

On most 2013 Focus engines, it’s mounted low on the engine block facing the crank or flywheel, typically on the gearbox side. Access is usually from underneath after removing the lower splash shield, and it’s held in by a single small bolt with a sealed O‑ring.

What are the signs the crank‑angle sensor is failing on this model?

Common clues include intermittent no‑start (especially hot), random stalling, rough running, an erratic or dead tach, and fault codes like P0335/P0336. If those show up alongside a normal fuel pressure and good spark, the CKP is high on the list.

Do you need to program or relearn anything after replacing it?

Often it’s plug‑and‑play, but it’s smart to clear codes and check live RPM. Some Fords benefit from a crank profile relearn (misfire monitor correction) using a capable scan tool such as Ford IDS or Forscan. If prompted by the ECU or if misfire monitors won’t set, run the relearn.