Parts for your 2022 Suzuki Splash-Map sensor

2022 Suzuki Splash MAP sensor — what it does, where it lives, and when to sort it

Technical sources confirm the Suzuki Splash uses a MAP (manifold absolute pressure) sensor. The Suzuki Splash/Ritz service manuals for K10B/K12B engines list a MAP sensor within Engine Electrical—Intake Air System, and the Suzuki Electronic Parts Catalogue includes MAP sensor part numbers for these engines (commonly referenced as 18590-58J00/57K00). Autodata and Haynes wiring diagrams also show a 3‑pin MAP sensor feeding the ECM. While factory production of the Splash ended well before 2022, a 2022‑registered Splash in Australia or New Zealand will still use the same engine management hardware—so a MAP sensor is relevant on this vehicle.

On the Splash, the MAP sensor measures intake manifold pressure so the ECU can figure out engine load, then trim fuel, ignition timing, and idle control accordingly. Paired with intake air temperature, it keeps the little Suzuki smooth on cold starts, tidy at idle, and frugal around town. It also plays a role in detecting EGR/evap flow and altitude changes, so the car doesn’t feel breathless heading over the Kaimais or up to the Blue Mountains.

It’s not a scheduled replacement item, but it does appreciate the odd check during servicing. If there’s oil mist or carbon from PCV blow‑by, the sensor’s port can get grubby and read low. A quick visual inspection of the sensor, its O‑ring, and the connector is worthwhile at each air filter change, especially if the Splash lives on dusty gravel roads. Typical symptoms of a crook MAP include hard starts, lumpy idle, flat spots on take‑off, sooty exhaust, or the MIL on with codes like P0106, P0107, or P0108.

Replacement is straightforward: unplug the 3‑pin connector, remove the single retaining bolt, and lift the sensor out of the manifold. Always fit a fresh O‑ring, lightly lubricated, and seat it square to avoid vacuum leaks. Tighten the bolt to the workshop spec (low torque—don’t overdo it), reconnect the plug, clear any fault codes, and perform a short road test. Using a quality OEM‑equivalent sensor avoids headaches with dodgy readings. If a scan tool’s handy, compare KOEO MAP reading to local barometric pressure, they should be close.

Handy servicing pointers for Aussie and Kiwi owners:

• Keep the air filter clean, dirt ingress accelerates MAP contamination.
• Check for split vacuum hoses or manifold leaks that can fake a MAP fault.
• If water crossings or heavy rain were involved, inspect for moisture in the connector.

FAQs

Where is the MAP sensor on a 2022 Suzuki Splash?
It’s mounted on the intake manifold near the throttle body, held by a single bolt with a 3‑pin electrical plug. On K12B 1.2 engines it sits on the top or side of the manifold for easy access from above with basic hand tools.

How often should the MAP sensor be replaced?
There’s no fixed interval. Replace only if it fails tests or triggers fault codes. During regular servicing, check the connector, make sure the O‑ring isn’t flattened, and clean light deposits from the port with sensor‑safe cleaner if needed.

Can a faulty MAP sensor cause high fuel use or a failed emissions/WOF check?
Yes. If the ECU sees incorrect load, it may over‑fuel or retard timing, lifting consumption and emissions. Restoring a good MAP signal typically brings fuel trims and idle back into line and can help clear an emissions fail.