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Home › Chevrolet › 2002 › Prizm Base, Standard › Repair and Diagnosis › Engine Performance › System › Engine Controls - Self-Diagnostics - 1.8L › Diagnostic Tests › DTC P0420: Catalyst System Low Efficiency › Conditions For Setting DTC

Conditions For Setting DTC

The HO2S 2 signal is as active as HO2S 1 signal.

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