Rick's Free Auto Repair Advice

Heated Catalyst Monitor — I/M Heated Catalyst Monitor Operation

Heated Catalyst Monitor

A catalytic converter must reach at least 400°F to 600°F before it can properly reduce emissions. Some carmakers equip their catalytic converters with a heater to speed up bring the catalytic converter to its operating temperature more quickly. This helps reduce emissions by reducing the converter’s down time when the engine is cold.

The Heated Catalyst Monitor performs the same diagnostic tests as the catalyst Monitor, and also tests the catalytic converter’s heater for proper operation.

This Monitor is also a “Two-Trip” Monitor.

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Posted on by Rick Muscoplat

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