Parts for your 2021 Suzuki Splash-Crank angle sensor

2021 Suzuki Splash crank-angle sensor — what it does and how to look after it

Yes, the 2021 Suzuki Splash (including models powered by Suzuki’s K10B 1.0L, K12B 1.2L petrol, and the 1.3 DDiS diesel) uses a crank angle sensor, also known as a crankshaft position sensor (CKP). This is confirmed by Suzuki workshop literature for Splash/Swift engines (Engine Control/ECM sections), and by standard engine management references such as Bosch gasoline and diesel management texts and SAE OBD-II fault code definitions (e.g., P0335/P0339 for CKP signal issues). So the part is absolutely relevant to the Splash’s engine management.

The crank angle sensor is the engine’s timekeeper. It reads a toothed wheel on the crankshaft and feeds exact crank position and speed to the engine control module. With that live data, the ECU triggers spark and fuel with millisecond precision, keeps idle steady, and manages start-up under all Aussie and Kiwi weather conditions. On the Splash it also works with the cam sensor to nail down cylinder identification for sequential injection and proper ignition timing.

When a CKP starts to go crook, the Splash can be hard to start, stall at the lights, hesitate under load, or refuse to fire altogether. The check engine light may appear with codes like P0335 or P0339. Heat soak, oil contamination around the front of the engine, or a nicked harness near the pulley or bellhousing can all upset the signal.

This isn’t a regular service item, but it does benefit from a quick check under the bonnet during routine servicing: make sure the connector is snug, the wiring isn’t rubbing on brackets, and the sensor tip isn’t coated in sludge or metal fuzz. If oil leaks have been fixed recently, giving the sensor area a gentle clean can help signal quality.

Replacement is straightforward for a trained tech: disconnect the battery, gain access from below or through the wheel arch, remove the retaining bolt, ease out the sensor and O-ring, then refit a quality OEM-equivalent sensor. Lightly oil the O-ring, route the loom as per the manual, and tighten to the specified torque. After that, clear any codes and road test. Many Splash ECUs will relearn automatically, but some procedures call for a crank/cam relearn with a scan tool to tidy up idle and misfire counters.

Owners racking up high kilometres or driving in dusty, coastal, or stop–start conditions should keep an eye on symptoms early. A healthy CKP keeps the Splash starting first twist, sipping fuel sensibly, and running sweet as.

• Common signals of trouble: hard starting, random stalling, rough idle, misfires, and a check engine light.
• Good practice: verify power/earth at the connector, inspect loom routing, and use a scan tool to view live RPM while cranking.
• Best parts: choose genuine Suzuki or a reputable aftermarket brand built to OEM spec.

Popular questions about the 2021 Suzuki Splash crank-angle sensor

Where is the crank-angle sensor on a 2021 Splash?
On the K10B/K12B petrol engines it’s typically mounted low on the engine block near the crank pulley (timing cover area). On the 1.3 DDiS diesel it’s often positioned at the gearbox bellhousing reading the flywheel. Access may be easiest from underneath or through the left wheel arch.

Can the crank-angle sensor be cleaned, or does it need replacing?
If the tip has light debris or oil film, a gentle clean and fixing any oil leaks or wiring chafe can restore a clean signal. If the sensor has gone open-circuit, is heat-soaked intermittently, or throws recurring P0335/P0339, replacement is the go.

Is a relearn needed after replacing the sensor?
Many Splash ECUs will settle themselves after a short drive cycle. However, a professional scan tool crank/cam relearn is sometimes recommended to stabilise idle and misfire monitors more quickly.