Post Catalyst Diagnostics In Rich And Lean Fuel Conditions

While it's true that an oxygen sensor can't directly detect raw fuel, it plays a crucial role in diagnosing fuel-related issues within your vehicle.

Today, John shows us how graphing the data from the post-catalyst oxygen sensor can provide valuable insights into your engine's performance. By analyzing the sensor's readings, we can distinguish between rich and lean fuel conditions, a critical step in pinpointing the root cause of various engine problems.

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