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Incomplete catalyst 2003 Toyota Tacoma V6 3.4L, pending P0420

Vehicle: 2003 Toyota Tacoma V6 3.4L

2 Answers

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P0420 Catalytic below threshold

When this code is set if you have a scan tool with live datal look at the Bank 1 Sensor 2 02 sensor reading a good catalytic convertor will read above 650mvlts. A faulty reading of the 02 sensor would set this code as a faulty catalytic when it would be just the 02 sensor
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P0420 TOYOTA - Catalyst System Efficiency Below Threshold Bank 1

Read more: https://www.autocodes.com/p0420_toyota.html

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