Rough engine? Check engine light on? Bosch recommends checking

As combustion of fuel and air exits the engine’s exhaust system, the quality of the gas is immediately analyzed and relayed to the engine control unit (ECU) via a Lambda sensor, commonly known as the O2 sensor. The signal from the O2 sensor is key to ensure that the engine is consuming the right amount

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Rough engine? Check engine light on? Bosch recommends checking the oxygen sensors

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