Parts for your 2013 Suzuki Sx4-Camshaft sensor

2013 Suzuki SX4 camshaft sensor – what it does and how to look after it

Technical references confirm the 2013 Suzuki SX4 does use a camshaft position sensor (CMP). Suzuki’s SX4 Service Manual (Engine Control: CMP Sensor), the Suzuki Electronic Parts Catalogue for M16A and J20B engines, and mainstream workshop databases such as Autodata and ALLDATA all list the CMP as part of the engine management system. These resources also document related fault codes (e.g., P0340 and P0341) for CMP circuit or performance issues, showing it’s integral to how the SX4 runs.

The camshaft sensor on a 2013 Suzuki SX4 tells the engine control unit exactly where the intake cam is, so the ECU can sync fuel injection, time the spark properly, and command variable valve timing. That means better cold starts, smoother idle, tidy fuel economy, and solid pull through the revs. If the CMP signal goes missing or messy, the ECU may drop to a backup strategy, which can feel flat, lumpy, or refuse to start altogether.

There’s no set replacement interval for the CMP, but it’s smart to include a quick check during routine servicing. Under the bonnet, inspect the sensor connector, look for chafed wiring, and make sure there’s no oil wicking into the plug. Clean, fresh engine oil is a quiet hero here—sludgy oil can upset cam timing and the sensor’s ability to read the tone wheel reliably.

• Common symptoms of a crook cam sensor on an SX4:
  • Hard starting or stalling once warm
  • Rough idle, misfire, or flat spots
  • Higher fuel use and a lit check engine lamp (often P0340/P0341)

Replacement is typically straightforward: disconnect the battery negative, release the sensor’s electrical plug, remove the retaining bolt, twist the sensor gently to free the O-ring, and swap it with a light smear of clean oil on the new seal. Avoid forcing the connector or pinching the loom. Refit, clear any fault codes, and let the ECU relearn with a normal road drive. Coding is usually not required on the SX4, but a scan tool is handy to confirm cam/crank sync and to ensure no timing or crank sensor issues are lurking.

If faults persist after fitting a quality OEM-equivalent sensor, it’s worth checking timing chain alignment, VVT operation, and the crank sensor wiring, as these can mimic CMP faults. A quick diagnostic session can save a lot of guesswork.

Popular questions

Where is the camshaft sensor on a 2013 Suzuki SX4?
On most SX4s it’s mounted at the timing chain end of the cylinder head. On the M16A 1.6-litre it’s on the intake side near the upper timing cover, on the J20B 2.0-litre it’s in a similar spot by the rocker cover. Look for a small sensor held in with a single bolt and a two- or three-pin connector.

Is it safe to drive with a bad camshaft sensor?
If the sensor is failing, the car may start hard, run rough, or suddenly stall. While it might limp along, it’s not ideal—loss of power or a stall in traffic isn’t fun. Best move is to get it scanned and sorted promptly to avoid being stranded and to protect the catalytic converter from misfire damage.

Does a new camshaft sensor need programming?
On the 2013 SX4, the ECU generally doesn’t need coding for a new CMP sensor. Fit a quality unit, clear any DTCs, and drive so the ECU can relearn. If codes return, inspect wiring, connectors, and mechanical timing rather than assuming the sensor is at fault.