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Home › Toyota › 1997 › Paseo 2D Convertible, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Control System Tests W/Codes › Circuit Tests › DTC P0420: Catalyst System Efficiency Below Threshold › Notes

DTC P0420: Catalyst System Efficiency Below Threshold: Notes

NOTE: Sensor No. 1 refers to sensor located in exhaust manifold. Sensor No. 2 refers to sensor located behind catalytic converter.
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