Parts for your 2012 Suzuki Splash-Camshaft sensor

2012 Suzuki Splash camshaft sensor — what it does and how to look after it

Yes, the 2012 Suzuki Splash is fitted with a camshaft position sensor. This is confirmed in Suzuki’s workshop literature for the Splash petrol engines (K10B/K12B) and the DDiS diesel, which details the Camshaft Position (CMP) sensor circuit and diagnostics (e.g., DTCs P0340/P0341), and in the Suzuki Electronic Parts Catalogue that lists a CMP sensor for these engines. The sister model (Opel/Vauxhall Agila B) shows the same inclusion in its service data. Those technical sources make it clear the sensor is very much part of how the Splash runs.

On a 2012 Splash, the camshaft sensor helps the engine computer figure out exactly where the intake cam is, so it can time fuel injection and spark properly. On the K12B 1.2 with variable valve timing, it’s also crucial for controlling the cam phaser. Without a clean cam signal, the Splash can be hard to start, run rough, or drop into limp mode, and it’ll likely pop a check engine light with cam sensor fault codes.

It’s not a routine service item, but a bit of care goes a long way. The sensor typically sits on the top or end of the cylinder head near the timing chain end, reading a trigger on the cam. If the vehicle throws cam sensor codes or shows tell-tale symptoms, it’s time to inspect or replace.

• Common symptoms: extended cranking, misfires at idle, flat spots, poor fuel economy, check engine light (often P0340/P0341).
• Quick checks first: inspect the 3‑pin connector for oil ingress or brittle wiring, make sure the harness isn’t rubbing under the bonnet, and look for sludge buildup from overdue oil changes.
• Replacement tips: disconnect the battery, unplug the connector, remove the single retaining bolt, and ease the sensor out. Lightly oil the new O‑ring, seat the sensor squarely, and refit the bolt. Clear codes and road-test. No special programming is usually required, most ECUs relearn immediately.
• Good practice: keep engine oil changes on schedule—clean oil helps the cam phaser and the sensor read consistently. Use quality parts, genuine or reputable aftermarket sensors tend to last longer.

If chasing cam-related faults on a Splash, it’s smart to scan for codes, check the crank sensor and timing chain condition as well, and follow the diagnostic flow in the workshop manual to avoid parts-darts.

FAQs

Where is the camshaft sensor on a 2012 Suzuki Splash?
On the petrol K10B/K12B it’s mounted on the cylinder head at the timing chain end, accessible from the top of the engine bay. The DDiS diesel places it at the front of the head near the cam drive. It’s a small, 3‑pin Hall‑effect sensor held in with one bolt.

Do I need to program the ECU after replacing the camshaft sensor?
Generally, no. The Splash’s ECU will sync to the new sensor on start-up. Clear any stored fault codes, start the car, and take it for a short drive so the ECU can confirm cam/crank correlation. If codes return, recheck the connector, wiring, and timing chain wear.

What causes camshaft sensors to fail on a Splash?
Age and heat, oil contamination in the connector, wiring damage, or excessive metal debris/sludge inside the head can all upset the signal. Sticking with timely oil changes and fixing any oil leaks around the rocker cover helps the sensor live a long life.