Parts for your 2022 Suzuki Splash-Oxygen sensor

2022 Suzuki Splash Oxygen Sensor — Purpose, Fitment and Service Advice

Yes, an oxygen sensor is used on the 2022 Suzuki Splash. Technical sources including Suzuki’s service information for the K12B/K10B petrol engines, Bosch and NGK/NTK application catalogues, and EOBD/Euro emissions requirements (UNECE Reg. 83) all confirm the Splash runs closed-loop fuel control using upstream and downstream oxygen (lambda) sensors. Even where the Splash was first registered in 2022 as a continued or parallel-market model, the petrol EFI setup remains the same: at least one sensor before the catalytic converter and one after it.

The oxygen sensor’s job is to read the oxygen content in the exhaust so the engine control unit can keep the air–fuel mixture on the money. That tight control trims fuel use, keeps the catalytic converter happy, and makes the car smoother to drive. On the Splash, the pre-cat sensor does the fine-tuning, while the post-cat sensor monitors cat efficiency and flags trouble.

• Common signs of a tired sensor: worse fuel economy, check engine light (codes like P0130–P0161), rough idle, hesitation, or a whiff of sulphur from the exhaust.
• Inspection tips during servicing: check the wiring and plug for heat damage, ensure the loom is clipped away from the manifold, and look for exhaust leaks that can skew readings.

There’s no strict replacement interval, but many Splash sensors last around 160,000 km. If fuel use climbs, the engine light’s on, or live data shows a lazy signal, it’s time. When replacing, a quality sensor from Denso, NGK/NTK, or Bosch matched to the VIN is the safe bet.

1. Warm the engine briefly, then shut it off. Under the bonnet, unplug the sensor.
2. Use an O2 sensor socket to remove it, avoid twisting the harness.
3. Install the new sensor (most are pre-coated, if not, use only sensor-safe anti-seize). Tighten to the specified torque (often in the 35–40 Nm range—check service data).
4. Route the lead clear of heat, clear fault codes, and complete a short drive cycle so trims relearn.

Good fuel, a healthy air filter, and fixing intake or exhaust leaks early will help sensors live longer. The Splash typically has two sensors (Bank 1 Sensor 1 in the manifold, Bank 1 Sensor 2 after the cat), though exact fitment can vary by engine and market, so confirming by VIN is smart.

FAQs

How many oxygen sensors does a 2022 Suzuki Splash have and where are they?
The Splash typically has two: one before the catalytic converter in the exhaust manifold (upstream) and one after the converter (downstream). This layout supports closed-loop fuelling and catalyst monitoring. Always confirm by VIN, as engine and market variations exist.

When should the Splash’s oxygen sensors be replaced?
They’re usually replaced on condition. Many last about 160,000 km, but faults can appear earlier with short trips, contamination, or exhaust leaks. If fuel economy drops, the check engine light appears, or diagnostics show slow or stuck sensor signals, replacement is due.

Can the oxygen sensor be cleaned instead of replaced?
Cleaning is rarely effective and chemicals can damage the sensing element. If a sensor is contaminated or electrically faulty, replacement is the reliable fix. Address root causes—rich running, oil burning, coolant leaks, or exhaust leaks—to avoid repeat issues.