0 281 004 184 Genuine Bosch Oxygen Sensor Lamba

1. Monitors Air-Fuel Mixture

• Detects how much oxygen is in the exhaust

• Tells the engine control module (ECM) whether the engine is running rich or lean

2. Helps Control Fuel Injection

• ECM adjusts fuel delivery to achieve the ideal air-fuel ratio for combustion

• Improves fuel efficiency and performance

3. Reduces Emissions

• Keeps emissions of CO, NOx, and unburned hydrocarbons low

• Works with catalytic converters to meet emissions standards

4. Supports Engine Diagnostics

• If the sensor reads outside normal parameters, it triggers the Check Engine Light

• Stores trouble codes for mechanics to identify fuel/air issues

1. Check Engine Light (CEL) Comes On

• Most common and first indicator

• ECM stores O2 sensor-related trouble codes (P0130-P0167, depending on sensor location)

2. Poor Fuel Economy

• Engine may run too rich or too lean

• Causes higher fuel consumption than normal

3. Rough Engine Idle or Misfires

• Hesitation or stumbling during idle or acceleration

• Can cause engine misfires if air-fuel mixture is not properly balanced

4. Failed Emissions Test

• High emissions of CO, NOx, or unburned hydrocarbons

• Catalytic converter may overwork or get damaged

5. Black Smoke from Exhaust

• Rich air-fuel mixture can cause black smoke from the tailpipe

• Unburned fuel exits through the exhaust

6. Engine Hesitation or Surging

• Vehicle may hesitate during acceleration or surge unpredictably

• Caused by improper fuel adjustments from a bad sensor

7. Rotten Egg Smell

• A failing oxygen sensor can cause the catalytic converter to malfunction, producing a sulfur smell

8. Engine Performance Issues

• Loss of power, rough running, or stalling

• ECM cannot accurately control fuel injection without proper O2 readings