Parts for your 2019 Suzuki Splash-Map sensor

2019 Suzuki Splash MAP sensor: what it does, where it lives, and how to look after it

Yes, the 2019 Suzuki Splash uses a MAP (Manifold Absolute Pressure) sensor. Technical sources that document this include the Suzuki Splash/Ritz workshop manual for the K10B/K12B petrol engines, which details the “Manifold Absolute Pressure (MAP) Sensor” function and diagnostics, and the Suzuki Electronic Parts Catalogue, which lists a MAP sensor on the intake manifold for Splash/Ritz petrol variants (commonly referenced as Suzuki P/N 18590-73K00 or supersessions, DDiS diesel variants use a boost/MAP sensor as well). These sources confirm the sensor is fitted and monitored by the engine control module (ECM).

On the 2019 Suzuki Splash, the MAP sensor is the little workhorse that tells the ECM how much air the engine is actually pulling in. By measuring intake manifold pressure and combining it with intake air temperature, throttle position and engine speed, the ECM calculates engine load. That’s how it dials in the right amount of fuel, sets ignition timing, manages EGR and keeps emissions tidy. When the MAP sensor goes off-song, drivers may notice a rough idle, flat spots on take-off, thirstier fuel use, or the MIL popping up with codes like P0105–P0108.

There’s no strict replacement interval for a MAP sensor, it’s more a “inspect and test” item during regular servicing. A good rule of thumb is to check it at each service or every 15–20,000 km. On the Splash, it’s mounted to the intake manifold with an O-ring. If it’s removed, always replace the O-ring and make sure the bore is clean so it seals properly. Don’t soak the sensor tip in harsh cleaners, if there’s light oily film, a quick blast of electronics-safe cleaner is fine. Heavy contamination usually points to other issues (excess blow-by, PCV dramas) that need fixing at the source.

Before blaming the sensor, look for vacuum leaks, split PCV or brake booster hoses, and loose manifold fasteners. A vacuum leak can mimic a bad MAP. With a scan tool, key-on/engine-off pressure should read close to local barometric pressure, then drop at idle, if it doesn’t track sensibly, wiring checks (5 V ref, ground, signal) are next. When replacement is needed, stick with a quality OEM-equivalent sensor, seat it squarely, nip the fastener to spec (don’t over-tighten), clear any codes and perform an idle relearn if your scan tool recommends it. That keeps the little Splash running sweet and sipping fuel like it should.

• Typical symptoms: hard starting, rough idle, poor economy, MIL with P0105–P0108.
• Service tips: inspect connector pins, O-ring, and hoses, verify 5 V reference and ground, use scan data to confirm readings.
• Replacement: use OEM-quality, renew O-ring, clear codes, and check live data post-fit.

Popular questions about the 2019 Suzuki Splash MAP sensor

Where is the MAP sensor on a 2019 Suzuki Splash?
It’s typically bolted to the intake manifold on the petrol K10B/K12B engines, sealed with a small O-ring. A short wiring connector feeds 5 V reference, ground and signal back to the ECM. On diesel DDiS versions, the boost/MAP sensor may be located on the intercooler pipework or manifold.

Can a MAP sensor be cleaned or should it be replaced?
Light grime can be carefully cleaned with electronics-safe cleaner, but if the sensor output is erratic, out of range, or contaminated with oil due to underlying engine issues, replacement is the better bet. Always fix vacuum leaks or PCV faults first so a fresh sensor doesn’t get fouled again.

What fault codes point to MAP sensor trouble on the Splash?
Common MAP-related DTCs include P0105 (MAP/Baro circuit), P0106 (range/performance), P0107 (low input) and P0108 (high input). Use live data to confirm if the readings match engine conditions before swapping parts.