Why Do the Oxygen Sensors in Suzuki Cultus Fail o r Give Incorrect Readings?

Oxygen sensors in the Suzuki Cultus play a crucial role in measuring the level of oxygen in the exhaust gases, helping the engine control unit ECU adjust the air-fuel mixture for optimal performance. If the sensor malfunctions o r gives incorrect readings, it can cause poor fuel economy, increased emissions, and reduced engine performance.

Common Causes of Oxygen Sensor Failure:

Aging o r Wear: Over time, oxygen sensors lose their ability to detect changes in the exhaust gases effectively, especially after high mileage.

Contamination: Contaminants such as engine oil, coolant, o r fuel additives can damage the sensor, leading to incorrect readings o r failure.

Clogged Exhaust System: If the exhaust system is blocked o r the catalytic converter is clogged, it can affect the sensor’s ability to detect exhaust gases properly.

Faulty Wiring o r Connector Issues: Corroded o r loose electrical connections can lead to incorrect sensor readings o r complete failure.

Symptoms of a Faulty Oxygen Sensor:

Check Engine Light CEL on the Dashboard: A malfunctioning oxygen sensor often triggers the CEL.

Poor Fuel Efficiency: Inaccurate readings can cause the engine to run rich too much fuel, leading to poor fuel economy.

Engine Stalling o r Misfiring: An incorrect air-fuel mixture can cause engine stalling o r rough idling.

Increased Emissions: Faulty oxygen sensors lead to higher emissions, which can result in failing emission tests.

How to Fix:

Replace the Oxygen Sensor: The most effective solution is to replace the faulty oxygen sensor with a new one.

Ensure Proper Wiring Connections: Inspect the wiring and connectors leading to the sensor and replace any corroded o r damaged parts.