Parts for your 2007 Ford Fiesta-Camshaft sensor

2007 Ford Fiesta camshaft sensor: what it does and when to replace it

Technical sources confirm the 2007 Ford Fiesta does use a camshaft position sensor (CMP). Ford ETIS/Workshop Manual coverage for Fiesta 2002–2008 (engine management sections), the Haynes Ford Fiesta 2002–2008 manual (No. 4186), and professional data sets such as Autodata/AllData list a CMP for the 1.25/1.4/1.6 Duratec petrol engines and TDCi diesels, with relevant fault codes like P0340/P0341 documented. So, it’s a relevant and fitted component on this model year.

On a 2007 Fiesta, the camshaft sensor lets the engine control unit know exactly where the cam is in its rotation. That timing info is crucial for neat, sequential fuel injection, clean starts, accurate ignition timing, and—on Ti‑VCT variants—proper cam phasing. Without a clean cam signal, the ECU has to guess, which can mean long cranks, rough idle, flat spots, higher fuel use and the odd stall when hot. The check engine light usually tags along.

For servicing, the cam sensor isn’t a scheduled replacement item, but it’s smart to give it a once‑over whenever the bonnet’s up. Owners and techs typically:

• Scan for codes first (P0340/P0341 are the classics) and look at live data for cam/crank sync.
• Inspect the 3‑pin plug and loom for oil wicking, broken clips or chafed insulation.
• Keep oil changes on time—especially on Ti‑VCT engines—as sludgy oil can mess with cam control and the signal.

Replacement is usually straightforward on petrol models: the sensor sits on the cylinder head at the timing end, retained by a single small bolt and sealed with an O‑ring. Typical steps are disconnect the battery negative, move the airbox or intake snorkel if it’s in the way, unplug the connector, pull the bolt, swap the sensor and O‑ring, then refit and torque to the spec in the workshop manual. Clear codes and confirm a clean cam/crank sync on a road test. TDCi versions are similar in principle, though access can differ—check the service data for the exact engine code.

A quality OE‑equivalent sensor is worth it here, cheapies can give flaky signals that come back to bite. If a Fiesta is playing up intermittently, don’t just throw a sensor at it—rule out timing belt stretch/misalignment, poor grounds and water in the loom. Get those sorted and the little Ford will start first twist and run sweet as.

• Technical references used: Ford ETIS/Workshop Manual (engine management sections), Haynes Manual Ford Fiesta 2002–2008 (No. 4186), Autodata/AllData professional service information.

Popular questions

Does a 2007 Ford Fiesta have a camshaft sensor?
Yes. Both the Duratec petrol engines and the TDCi diesels use a camshaft position sensor. It provides the ECU with cam phase so the engine can fire injectors and spark precisely, and it’s essential for Ti‑VCT cam timing to behave.

Where is the camshaft sensor on a 2007 Fiesta?
Typically at the timing belt/chain end of the cylinder head, near the top, secured by one small bolt with a 3‑pin plug. Access varies a touch by engine, so on some models the airbox or intake duct needs to come off to get a spanner in.

Can a Fiesta run with a faulty camshaft sensor?
It might start and run poorly on a default strategy, but expect long cranks, lacklustre performance and a glowing MIL. It’s not recommended to drive it like that—diagnose and replace the sensor or repair the wiring before it causes more grief.