Parts for your 2007 Suzuki Sx4-Camshaft sensor

2007 Suzuki SX4 Camshaft Sensor — What It Does and How to Look After It

Based on factory technical material, the 2007 Suzuki SX4 does use a camshaft position sensor (CMP). The Suzuki SX4 Workshop Manual for RH416/RH420 engines (M16A 1.6-litre and J20-series 2.0-litre) details the CMP in the Engine Control System, includes wiring diagrams for it, and lists related OBD-II fault codes such as P0340–P0344. Suzuki’s diagnostic flowcharts and VVT control checks also reference CMP signals. So yes — it’s a relevant, fitted component on this model year.

On a 2007 SX4, the camshaft sensor tells the ECU exactly where the intake cam is in its rotation. That timing info lets the ECU fire the injectors sequentially, trigger ignition at the right moment, and keep the variable valve timing behaving as it should. If the CMP signal drops out, the car may still run using fallback strategies, but it’ll crank longer, feel a bit doughy off the mark, and the check engine light will likely glow.

It’s not a regular service item, but it does pay to keep an eye on it during routine servicing. A quick visual under the bonnet for oil weeps at the sensor body or a hardened O-ring, plus a check that the wiring loom and connector aren’t brittle or rubbed through, goes a long way. A light mist of oil from the rocker cover can wick into the plug over time, so clean and dry any contamination.

• Common symptoms of a dodgy CMP: extended crank when warm, intermittent stalling, rough idle, poor fuel economy, VVT performance faults, and codes like P0340/P0341.

Replacement is straightforward with basic tools:

1. Confirm the fault with scan data and codes, inspect wiring first.
2. Disconnect the battery, unplug the sensor, remove the retaining bolt, and twist-pull the sensor free.
3. Lightly oil the new O-ring, seat the new sensor, and nip the bolt to spec with a torque wrench (refer to the service manual).
4. Clear codes, start the engine, and check live data for a clean CMP signal.

Location-wise, the sensor sits on the cylinder head near the timing chain area — typically at the intake cam end on M16A, and similarly placed on J20-series engines. Use an OEM or high-quality replacement, cheapies can misread when hot. A dab of dielectric grease on the connector pins helps ward off moisture without overdoing it.

Popular questions

Where is the camshaft sensor on a 2007 SX4?
It’s mounted on the cylinder head near the timing chain cover, reading the intake cam. On M16A engines it’s at the end of the intake cam gallery, on J20-series engines it’s in a similar spot. Look for a small sensor with a single bolt and a two- or three-pin connector.

Can a failing camshaft sensor cause hot no-starts?
Yes. Heat soak can push a weak sensor over the edge, leading to long crank or no-start when warm, then starting fine once it cools. Logging live data and checking for P0340/P0341 is the quickest way to confirm.

Should the cam and crank sensors be replaced together?
Not necessarily. They’re separate parts with different failure rates. If diagnostics point to the cam sensor and wiring is good, replace just that sensor. That said, on high-kilometre cars it’s sensible to inspect the crank sensor and its wiring while you’re there.