Parts for your 2019 Ford Focus-Camshaft sensor

2019 Ford Focus camshaft sensor — purpose, care, and when to replace

Yes, the 2019 Ford Focus uses a camshaft position sensor. This is documented in Ford’s Workshop Manual for Focus (C2 platform, 2018–on), engine management sections and wiring diagrams, and is supported by OEM parts catalogues (Ford Microcat/FordParts) listing a camshaft position sensor for the EcoBoost 1.0L and 1.5L petrol and EcoBlue 1.5L diesel variants. Independent technical references like Autodata/Haynes (2018–on Focus) and Bosch Hall‑effect camshaft sensor briefs also describe its role in sequential fuel injection and variable cam timing on these engines.

On the 2019 Focus, the camshaft sensor (CMP) feeds the PCM the exact cam angle so it can fire injectors and coils in the right order and run variable cam timing smoothly. Lose that signal and the car may crank longer, run rough, drop into limp mode, or stall at idle. It works with the crankshaft sensor to keep everything in sync under the bonnet from cold start to highway cruising.

There’s no scheduled replacement for the CMP on a Focus, it’s a “fit and forget” item until it faults. As part of routine servicing, it’s smart to give it a once‑over:

• Scan for fault codes such as P0340/P0341/P0344 even if no light’s on.
• Inspect the connector for oil wicking, bent pins, or green corrosion, check the harness for chafing near the cam cover.
• Make sure there are no oil leaks tracking onto the sensor from the rocker cover.

If symptoms show up—hard starting, misfire at low revs, sluggish take‑off, or erratic idle—rule out basics first (battery, timing belt/chain condition, crank sensor, and VVT solenoids). When replacing the CMP on a Focus:

1. Disconnect the battery negative and let modules sleep.
2. Unplug the sensor, remove the retaining bolt, and twist the sensor gently to free the O‑ring.
3. Lightly oil the new O‑ring, seat the sensor squarely, and tighten the fastener to the manufacturer’s spec.
4. Reconnect, clear codes, and perform an idle relearn after a short drive cycle.

A quality OEM‑spec sensor usually restores smooth starts, stable idle, and proper fuel economy. Keeping connectors clean and secured, plus fixing any oil leaks promptly, will help the sensor go the distance across plenty of Kiwi and Aussie kilometres.

Popular questions

1) What are common signs a 2019 Focus camshaft sensor is failing?
Typical signs include hard starting, intermittent stalling at idle, rough running just off idle, flat spots on acceleration, higher fuel use, and the check‑engine light. Scan tools often show codes like P0340 or P0341. Because these can also come from wiring faults or timing issues, always test before replacing.

2) Is it safe to drive with a bad camshaft sensor?
Short trips to a workshop are usually fine, but ongoing driving isn’t recommended. The engine may drop into limp mode, stall unexpectedly, or run rich, which can stress the catalytic converter. Best bet: diagnose and fix promptly to avoid getting stranded.

3) How many camshaft sensors does a 2019 Focus have?
All 2019 Focus engines have a crank sensor and at least one camshaft sensor. Most local EcoBoost and EcoBlue variants use a single CMP. Exact fitment can vary by engine code and market, so check the VIN in an OEM parts catalogue if unsure.