Parts for your 2015 Ford Fiesta-Camshaft sensor

2015 Ford Fiesta camshaft sensor: what it does and how to look after it

Technical references confirm the 2015 Ford Fiesta is fitted with a camshaft position (CMP) sensor across its common engines, including the 1.0 EcoBoost, 1.6 Ti‑VCT petrol, ST 1.6 EcoBoost and 1.5 TDCi. Ford’s Workshop Manual for Fiesta (2011–2017, Electronic Engine Controls), the Ford global parts catalogue, and service data from Autodata and Haynes all list a CMP sensor and related diagnostics (DTCs such as P0340/P0341) for these engines. So yes, the camshaft sensor is absolutely relevant to this model.

On the 2015 Fiesta, the camshaft sensor teams up with the crankshaft sensor to tell the ECU exactly which stroke each cylinder is on. That lets the ECU run true sequential fuel injection, fire the coils at the right moment, and control variable cam timing (VCT) smoothly. When it’s healthy, you get crisp starts, tidy idle, decent fuel economy and proper grunt. When it’s crook, expect hard starting, misfires, flat spots and a glowing check‑engine light.

• Typical symptoms: long crank or no start, rough idle, poor fuel economy, limp mode, and fault codes like P0340/P0341.
• Why failures happen: oil contamination, heat cycling, internal sensor wear, damaged wiring or a tired connector.

It’s not a scheduled replacement item, but it’s wise to check it whenever the Fiesta comes in for engine diagnostics or timing/VCT work. Keeping oil changes on time helps too, as clean oil supports stable VCT operation and reduces grime around the sensor area.

1. Diagnosis: scan for codes and look at live data (cam/crank synchronisation, VCT commanded vs actual). Rule out wiring issues before blaming the sensor.
2. Location: mounted on the cylinder head at the timing end under the engine cover, with a single retaining fastener and an O‑ring seal.
3. Replacement tips: disconnect the battery earth, unplug the connector, remove the bolt, twist and lift the sensor. Lightly oil the new O‑ring, seat it squarely, and refit the bolt to the correct snug torque. Clear codes and perform any cam/crank sync or idle relearn if prompted by the scan tool.
4. Parts quality: use OEM or high‑quality aftermarket sensors to avoid signal noise that can upset VCT and ignition timing.

If the Fiesta is logging cam/crank correlation faults after timing work, double‑check the timing marks and VCT phaser position before chasing the sensor. A good sensor can’t mask a mechanical timing misalignment.

Popular questions about 2015‑Ford‑Fiesta camshaft sensor

Where is the camshaft sensor on a 2015 Ford Fiesta?
It sits on the cylinder head at the timing belt/chain end, typically under the plastic engine cover. Access is from the top of the engine bay, look for a small two‑ or three‑pin connector going into a sensor secured by one bolt.

Exact mounting can vary slightly by engine (1.0 EcoBoost vs 1.6 petrol/diesel), but it’s always on the camshaft side, not down at the crank pulley.

What fault codes point to a bad camshaft sensor on a 2015 Fiesta?
Common codes include P0340 (Camshaft Position Circuit) and P0341 (Camshaft Position Range/Performance). You might also see VCT‑related codes if the ECU can’t reliably track cam position.

Before replacing the sensor, inspect the harness, connector pins and engine earths, as wiring issues can mimic a failed sensor.

Does the camshaft sensor need regular replacement?
No, it’s not a routine service item. Replace it only if it’s faulty or damaged. Sticking to timely oil changes and keeping the connector clean helps it live a long life.

After replacement, clear codes and perform any relearn the scan tool requests to restore crisp starting and smooth VCT operation.