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Home >> Jaguar >> 2004 >> XJ8 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Electronic Engine Controls - 4.2L (2003.5-09) >> Description and Operation >> Electronic Engine Controls >> Catalyst Monitor Sensor

Catalyst Monitor Sensor

The catalyst monitor sensor is a non-linear characteristic type sensor fitted to the exhaust system's catalytic converter. The ECM uses this as it's secondary sensor to measure the oxygen content of the exhaust gasses within the exhaust after they have passed through the catalytic converter. As well as providing additional closed-loop fuelling control the ECM uses this information to determine the efficiency of the catalytic converter.

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