Parts for your 2019 Suzuki Splash-Camshaft sensor

2019 Suzuki Splash camshaft sensor — what it does and when to replace it

Is a camshaft sensor used on a 2019 Suzuki Splash? Yes. The Splash runs Suzuki’s K‑series petrol engines (K10B 1.0L and K12B 1.2L), and both use a camshaft position sensor for sequential fuel injection and variable valve timing control. This is documented in Suzuki’s K‑series engine service literature (Camshaft Position Sensor/CMPS function), the Suzuki Electronic Parts Catalogue listing a CMPS for Splash/Ritz/Swift applications (e.g., CMPS under group 33—Electrical), and independent workshop data such as Autodata/Haynes which show CMP input required alongside the crank sensor. So, the camshaft sensor is relevant and fitted.

On the 2019 Splash, the camshaft sensor’s job is to tell the ECU exactly where the cam is in its rotation. That lets the ECU fire injectors in the right order, time the spark properly, and manage the Splash’s VVT on the intake side. When it’s healthy, cold starts are crisp, idle is tidy, and fuel economy stays on point. When it plays up, the ECU loses phase information and the engine can stumble, run rich, or drop into limp mode.

It’s not a routine “service item” like oil or filters, but it lives a hard life on the cylinder head. As part of regular servicing, it’s smart to:

• Scan for fault codes (common ones are P0340/P0341) if there’s a hard start or misfire.
• Inspect the sensor connector and loom for oil ingress, brittle insulation, or corrosion.
• Keep oil changes on schedule, sludgy oil and varnish can upset timing control and sensor readings.

If replacement is needed, the job is straightforward: disconnect the battery, unplug the sensor, remove the small retaining bolt, twist the old sensor out, lightly oil the O‑ring on the new unit, and refit. Don’t overtighten the bolt—it's a small fastener in an alloy head. Use a quality OEM-equivalent sensor, cheapies can cause intermittent dramas that are a pain to trace. After installation, clear any codes and let the ECU relearn idle—usually a short drive cycle with a few minutes of idling and gentle acceleration does the trick.

Typical symptoms owners notice include longer cranking when hot, uneven idle, hesitation off the mark, or the check‑engine light coming on. Left unchecked, a dodgy cam sensor can also mask other timing issues, so sorting it early saves time and coin.

Popular questions

Where is the camshaft sensor on a 2019 Suzuki Splash?
It’s mounted on the cylinder head, reading a trigger on the camshaft. On the K12B/K10B engines it’s at the end of the head near the timing chain side, with a small single bolt and a two‑pin or three‑pin connector. Access is usually from the top with the engine cover off.

What are the signs the Splash’s cam sensor is failing?
Common giveaways are hard starting (especially warm), rough idle, misfires, flat spots, worse fuel use, and the MIL on. Scan tools often show P0340 or P0341. If symptoms are intermittent, gently wiggle the harness at idle—if the engine stumbles, suspect wiring or the connector as much as the sensor.

Does the camshaft sensor need coding after replacement?
No special coding is normally required. Fit the new sensor, clear fault codes, and perform a basic idle relearn with a short drive. If issues persist, check for stored crank/cam correlation faults and confirm timing chain condition and VVT operation.