Parts for your 2010 Ford Fiesta-Crank angle sensor

2010 Ford Fiesta crank angle sensor (CKP): fitted, purpose, and servicing tips

Technical sources including Ford workshop information for the WS/WT Fiesta (2008–2011), OEM parts catalogues (Ford ETIS), and major aftermarket listings (Bosch, NTK/NGK) all confirm the 2010 Ford Fiesta is fitted with a crankshaft position sensor, often called a crank angle sensor (CKP). It’s a key input for the Fiesta’s engine management across the 1.4/1.6 Duratec petrol and 1.6 TDCi diesel engines.

The CKP tracks the exact position and speed of the crankshaft. The Fiesta’s ECU uses this data to time spark and fuel injection, sync with the camshaft sensor, monitor misfires, and manage idle and start-up. If the signal drops out, the engine can be hard to start, stall at idle, or not run at all, and a check-engine light with codes like P0335–P0339 may pop up.

There’s no scheduled replacement for the CKP on a 2010 Fiesta, so it’s not a routine service item. Instead, think of it as a “inspect and fix as needed” part. During regular servicing, it’s smart to check the sensor connector and harness for chafing, oil saturation, or corrosion, especially near the bellhousing and lower timing cover where heat and road grime collect. A quick clean of the plug and a proper clip-on refit can save you chasing gremlins later.

Replacement is straightforward for a competent DIYer with basic tools, but always disconnect the battery and let the engine cool. The sensor is typically held by a single bolt and sealed by an O-ring. Swap in a quality OEM-equivalent unit, lightly oil the new O-ring, and avoid touching the magnetic tip with greasy fingers or getting metal filings stuck to it. Route the loom exactly as per factory so it can’t rub on brackets.

After refitting, clear any fault codes and let the ECU relearn by idling for a few minutes, then doing a gentle mixed drive. If a code returns, recheck the air gap and alignment tab, as well as grounds and battery health — low voltage can mimic a bad CKP.

• Common symptoms: long crank, sudden cut-out when hot, erratic tacho, poor fuel economy, and intermittent no-start.
• Handy tip: If issues worsen in rain or after a hot soak, look closely at connectors and loom shielding first.
• Best practice: Use branded sensors (Bosch, NTK/NGK, Motorcraft) and replace the O-ring each time.

Where is it? On most 1.6 petrol models it’s mounted low at the timing cover or near the gearbox bellhousing. On the 1.6 TDCi it typically reads the flywheel at the bellhousing. Access is from under the car with the splash shield off.

FAQ: Where is the crank angle sensor on a 2010 Ford Fiesta?

On the 1.6 petrol (Duratec/Sigma), it’s usually low on the engine either at the lower timing cover by the crank pulley or at the gearbox bellhousing, reading a reluctor on the flywheel. On the 1.6 TDCi diesel it’s typically at the bellhousing. Most techs access it from underneath with the undertray removed.

FAQ: Does the 2010 Fiesta’s CKP need routine replacement?

No. It’s not a scheduled item. Replace it only when faulty or if the connector/harness is damaged. As part of regular servicing, inspect the plug, wiring, and area for oil or debris, and scan the ECU for stored crank-sensor-related fault codes.

FAQ: Is it safe to drive with a failing crank angle sensor?

Intermittent faults can allow short trips but risk sudden stalling or a no-start, which isn’t ideal on busy Kiwi or Aussie roads. If you’re seeing long cranks, random cut-outs, or codes like P0335, get it checked and sorted promptly.